ICTP - Scientific Calendar

PLEASE NOTE: Due to ongoing concerns about the COVID-19 virus, ICTP conferences, schools and workshops that were to be held in person in Trieste this year are cancelled for the first half of 2021. Many activities are now being conducted online. Please check ICTP's Scientific Calendar frequently for updates.

NEW: Attend one of ICTP's virtual seminars.

Each year, ICTP organizes more than 60 international conferences, workshops, and numerous seminars and colloquia.

Interested in attending an activity? Complete an online application form: Events in the scientific calendar that have an "smr" number require participants to apply online. Click on the activity and complete the online application form.
Have a question about an "smr" activity? Please contact the organizers at smrXXXX (x being the 4-digit number of the activity)@ictp.it
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External organizations can pay for and organize their own high-level scientific and cultural events at ICTP. Details for these "Hosted Activities" are available in the Logistic Guidelines for Hosted Activities (pdf download).
Travel fellowships for ICTP conferences and workshops are available.

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Europe/Rome Abstract: I will describe a new notion of stability associated to fibrations in algebraic geometry. Much like Tian-Donaldson's notion of K-stability, there is an associated notion of a "canonical metric", in the form of an "optimal symplectic connection". Our main result shows that the existence of an optimal symplectic connection implies that the fibration is semistable. There is an associated moduli problem for stable fibrations over a fixed base, and I will also explain certain aspects of this. This is joint work with Lars Sektnan. ICTP ICTP pio@ictp.it

Seminar

7 Jan 2020

@ ICTP

Mathematics

Moduli theory, stability of fibrations and optimal symplectic connections

Room: Leonardo Building - Luigi Stasi Seminar Room

Speaker(s): Ruadhai Dervan (University of Cambridge, UK)

Seminar Start Time: 16:00

Europe/Rome Quantum devices could perform some informational tasks with much better performances than classical systems, with profound implications for cryptography, chemistry, material science, and many areas of physics. However, to reach this goal we need to control large quantum systems, where the many-body dynamics becomes fragile and the system quickly heats up to its thermal state. There are then two key questions: How does a closed quantum system thermalize (thus losing its “quantum power”)? How can we preserve quantum information in the presence of strong interactions? Using a nuclear spin chain as an exemplary experimental system, and the tools of Hamiltonian engineering, I will show how to choreograph the dynamics in order to prevent the system from heating up, even in the presence of strong interactions among spins. In particular, I will show how disorder can quench the scrambling of quantum information, a phenomenon known as localization, and thus prevent thermalization. Similarly, engineering quasi-conserved quantities in the system dynamics can induce prethermalization, a long-lived state that thermalizes only exponentially slowly. I will further discuss how metrics of information scrambling, such as out-of-time ordered correlations and echoes, can be used to investigate such phenomena and probe the limits to our quantum control. SISSA, Via Bonomea 265 ICTP pio@ictp.it

Seminar

9 Jan 2020

@ SISSA, Via Bonomea 265

Condensed Matter and Statistical Physics

Joint ICTP/SISSA Statistical Physics Seminar: How To Avoid 'Heated' Arguements Among your Spins

Speaker(s): Paola CAPPELLARO (MIT, USA)

Seminar Start Time: 11:30

Seminar

14 Jan 2020

@ ICTP

Strings and Higher Dimensional Theories

Dyonic black hole degeneracies in N = 4 string theory from Dabholkar-Harvey Degeneracies

Room: Leonardo Building - Luigi Stasi Seminar Room

Speaker(s): Abhiram KIDAMBI (Stanford University, USA)

Seminar Start Time: 14:30

Europe/Rome In ecological systems, heterogeneous interactions between pathogens take place simultaneously. This occurs, for instance, when two pathogens cooperate, while at the same time multiple strains of these pathogens co-circulate and compete. Notable examples include the cooperation of HIV with antibiotic-resistant and susceptible strains of tuberculosis, or some respiratory infections with Streptococcus pneumoniae strains. Models focusing on competition or cooperation separately fail to describe how these concurrent interactions shape the epidemiology of such diseases. We studied this problem considering two cooperating pathogens, where one pathogen is further structured in two strains. The spreading follows a susceptible-infected-susceptible process and the strains differ in transmissibility and extent of cooperation with the other pathogen. We combined a mean-field stability analysis with stochastic simulations on networks considering both well-mixed and structured populations. We observed the emergence of a complex phase diagram, where the conditions for the less transmissible, but more cooperative strain to dominate are non-trivial, e.g. non-monotonic boundaries and bistability. Coupled with community structure, the presence of the cooperative pathogen enables the co-existence between strains by breaking the spatial symmetry and dynamically creating different ecological niches. These results shed light on ecological mechanisms that may impact the epidemiology of diseases of public health concern. ICTP ICTP pio@ictp.it

Seminar

14 Jan 2020

@ ICTP

Quantitative Life Sciences

Interplay between competitive and cooperative interactions in a three-player pathogen system

Address: Via Beirut, 2

Room: Central Area, 2nd floor, old SISSA building

Speaker(s): Fakhteh Ghanbarnejad - Sharif University of Technology (SUT), Tehran, Iran

Support E-Mail: qls@ictp.it

Seminar Start Time: 14:30

Hosted Activity

16 Jan 2020

@ Trieste - Italy

Euro DIG Public Planning Meeting | (smr H607)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Organizer(s): Sandra Hoferichter, EuroDIG,

Europe/Rome What would you do if you were a system at criticality confined in a bounded domain? Of course you would forget about details of the interaction, and lattice spacing, flowing to an RG fixed point. Besides attaining this bulk universal behavior you would also try (boundary condition permitting) to forget about the confinement becoming "as uniform as possible". Implementing this requirement in absolute geometric language, the one used by general relativity, we obtain novel predictions for the structure of one- and two-point correlators. These predictions are tested successfully against numerical experiments yielding a precise estimate of a critical exponent of the Ising model in three dimension. New preliminary results for the three dimensional 3d xy model will also be presented. SISSA, Via Bonomea 265 ICTP pio@ictp.it

Seminar

16 Jan 2020

@ SISSA, Via Bonomea 265

Condensed Matter and Statistical Physics

Joint ICTP/SISSA Statistical Physics Seminar: Geometry of Bounded Critical Phenomena

Speaker(s): Giacomo GORI (IPT, Heidelberg University)

Seminar Start Time: 15:00

Seminar

20 Jan 2020

@ ICTP

Mathematics

Minimal surfaces in H3

Room: Leonardo Building - Luigi Stasi Seminar Room

Speaker(s): Filippo Morabito (Korea Advanced Institute of Science and Technology)

Seminar Start Time: 11:00

Europe/Rome Modulating the interaction between the atoms in a Bose-Einstein condensate (BEC) can give raise to diverse phenomena depending on the frequency and amplitude of shaking. When the frequency of modulation is tuned close to collective mode resonance, Faraday waves appear. At low frequencies granulation of BEC is observed, whereas at high frequencies matter-wave jets are emitted. We demonstrate the emission of correlated atom jets from a matter-wave soliton in a quasi-one-dimensional optical trap. All stages of the jet emission are captured in a simple model based on the 1D Gross-Pitaevskii equation (GPE). Beyond the scope of the mean-field GPE simulation, the jet number correlations are investigated. We show sub-Poissonian statistics of the number difference between the left and right first-order jets in a regime of suppressed second-order jets. SISSA, Via Bonomea 265 ICTP pio@ictp.it

Seminar

21 Jan 2020

@ SISSA, Via Bonomea 265

Condensed Matter and Statistical Physics

Joint ICTP/SISSA Statistical Physics Seminar: Emission of Correlated Jets from a Driven Matter-Wave Soliton

Speaker(s): Peter Jeglič (Jozef Stefan Institute, Ljubljana, Slovenia)

Seminar Start Time: 11:00

Europe/Rome When non-interacting Bose-Einstein condensate is confined to a quasi one-dimensional channel it will spread due to dispersion as dictated by the Schrödinger equation. The spreading rate can be affected by changing the interaction between the atoms via the Feshbach resonance. If the interaction is set to just the right value, the attraction between atoms exactly compensates the dispersion. In this case the BEC doesn't spread and we get a bright matter-wave soliton. The maximum number of atoms in a soliton is limited by the frequency of the channel and the interaction between atoms. By setting the inter-atom interaction to different attractive values we are able to create soliton trains with different number of solitons from elongated BECs. SISSA, Via Bonomea 265 ICTP pio@ictp.it

Seminar

21 Jan 2020

@ SISSA, Via Bonomea 265

Condensed Matter and Statistical Physics

Joint ICTP/SISSA Statistical Physics Seminar: Cesium Matter-Wave Solitons

Speaker(s): Tadej Mežnaršič (Jozef Stefan Institute, Lubljana, Slovenia)

Seminar Start Time: 11:30

Europe/Rome Abstract: The Hitchin-Kobayashi correspondence states that the moduli space of stable vector bundles over a projective manifold coincides with the moduli space of Einstein-Hermitian vector bundles. Over the years, this result and its consequences have served as a motivation to relate the existence of metrics of constant curvature on polarized manifolds to an algebraic condition (K-stability). The correspondence between stable and Einstein-Hermitian vector bundles has a well-known generalization in the context of Higgs bundles, where one studies Hitchin's harmonic bundle equations. In this talk we will describe how to give an analogous construction in the category of polarized varieties, thus defining what a "Higgs field" should be in this context and studying a system of equations that naturally arises from the construction. Note: After the talk we will be discussing the future plans for the seminar. http://users.ictp.it/~arincon/AGS.html SISSA ICTP pio@ictp.it

Seminar

21 Jan 2020

@ SISSA

Mathematics

An analogue of Hitchin's equations in the category of polarized varieties

Address: Via Bonomea, 265, Trieste

Room: Lecture Room A-134

Speaker(s): Carlo Scarpa (SISSA)

Seminar Start Time: 16:00

Europe/Rome There has been uninterrupted interest in the thermodynamics of supercooled water ever since the pioneering experiments of Speedy and Angell revealed sharp increases in this substance response functions upon supercooling. One intriguing hypothesis postulates the existence of a metastable liquid-liquid transition at deeply supercooled conditions. Numerical studies have played an important role in the development of this idea. Old and novel studies supporting the existence of such a critical point will be discussed. ICTP ICTP pio@ictp.it

Seminar

23 Jan 2020

@ ICTP

Condensed Matter and Statistical Physics

CMSP News and Views Seminars: Computational Studies of the Liquid-liquid Transition in Supercooled Water: Old and New Numerical Results

Room: Leonardo Building - Luigi Stasi Seminar Room

Speaker(s): Francesco SCIORTINO (Univ. di Roma La Sapienza, Rome, Italy)

Seminar Start Time: 11:00

Europe/Rome All lectures of the school were recorded and uploaded at the following link while lectures material is available here. The Computational School on Electronic Excitations in Novel Materials Using the Yambo Code, introduces participants to post-DFT simulations, in particular many-body perturbation theory (MBPT) approaches and provide training in the calculation of electronic and optical properties of materials. The program will offer theoretical and technical lectures, as well as dedicated hands-on sessions where the students will learn the use of the Yambo code in a massively parallel environment and post processing tools for the analysis of the results. The main topics covered range from introductory lessons on MBPT concepts through to more advanced topics in materials science. General topics include the diagrammatic approach, self- energy and quasiparticles, the GW approximation, linear response, and the Bethe-Salpeter equation. Strong focus is given on connection with experimental observables (from photoemission, absorption, photoluminescence). Advanced topics will address real time evolution of equations of motion, time dependent polarization in terms of the Berry phase, computation of non-linear optical properties. Participants are required to have a pre-existing background in DFT and in running DFT simulations. Speakers: Seyedeh Samaneh Ataei (CNR-NANO, Italy) Claudio Attaccalite (CNRS, CINAM, Aix-Marseille Université, France) Stefano Baroni (SISSA, Italy) Miki Bonacci (University of Modena and Reggio Emilia, Italy) Andrea Ferretti (CNR-NANO, Italy) Andrea Marini (CNR-ISM, Italy) Pedro Melo (University of Liege, Belgium) Alejandro Molina-Sanchez (IINL, Portugal) Paolo Moras (CNR-ISM, Italy) Fulvio Paleari (CNR-ISM, Italy) Maurizia Palummo (University of Rome "Tor Vergata", Italy) Davide Sangalli (CNR-ISM, Italy) Michiel Jan Van Setten (IMEC, Belgium) Daniele Varsano (CNR-NANO, Italy) Ludger Wirtz (Université du Luxembourg, Luxembourg) Tutors: Seyedeh Samaneh Ataei (CNR-NANO, Italy) Mike Atambo (The Technical University of Kenya, Kenya) Miki Bonacci (University of Modena and Reggio Emilia, Italy) Azimatu Seidu (Aalto University, Finland) Notes: Thanks to the generous contribution of MaX and Psi-K, a shared accommodation in double room is provide at the ICTP Guest Houses for all participants. Participants are free to upgrade at their own costs the accommodation to a single room accordingly to the ICTP Guest Houses prices. Due to the hands-on nature of the School, the number of participants is limited to the capacity of Adriatico Informatics Lab. For more information regarding the Informatics Lab, please visit the link. ICTP ICTP pio@ictp.it

Activity

27 Jan 2020 - 31 Jan 2020

@ ICTP

New Research Areas (High Performance Computing)

Computational School on Electronic Excitations in Novel Materials Using the Yambo Code | (smr 3421)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Daniele Varsano (CNR-NANO), Maurizia Palummo (University of Rome Tor Vergata), Alejandro Molina-Sánchez (IINL), Conor David Hogan (CNR-ISM), Davide Sangalli (CNR-ISM), Ralph Gebauer (ICTP), Local Organiser: Ivan Girotto

Cosponsor(s): MAX EU Centre of Excellencemax, Psi-kpsi_k

Support E-Mail: smr3421@ictp.it

**DEADLINE: 15/12/2019**

Activity

27 Jan 2020 - 28 Jan 2020

@ ICTP

Earth System Physics

Public Health and Water Resources - Adaptation to Climate Change in the Eastern Mediterranean | (smr 3422)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Secretary: Pandora Malchose

Organizer(s): Yara Dahdal (Nature Palestine Society, Palestine), Robin Twite (Arav Institute for Environmental Studies, Israel), Assaf Hochman (Tel Aviv University, Israel), Local Organiser: Filippo Giorgi

Europe/Rome Professor Marc Mézard, Director of l’École normale supérieure, Paris, France, will deliver the Abdus Salam Distinguished Lecture Series 2020. Marc Mézard is a theoretical physicist. He received a PhD from Ecole Normale Supérieure in Paris, followed by a post-doc in Rome, and became the head of the statistical physics group in Paris-Sud University. He has been the director of École normale supérieure since 2012. His main field of research is the statistical physics of disordered systems and its use in various branches of science - biology, economics and finance, information theory, computer science, statistics, and signal processing. In recent years his research has focused on information processing in neural networks. He has received the Lars Onsager prize from the American Physical Society, the Humboldt-Gay-Lussac prize, the silver medal of CNRS and the Ampere prize of the French Academy of Science. He is a member of the European Academy of Science Three talks in the Salam 2020 lecture series are scheduled: Lecture 1 (Monday 27 January @ 16.30 hrs) - Artificial Intelligence: success, limits, myths and threats Abstract: Artificial Intelligence is about to have a dramatic impact on many sectors of human activity. In the last ten years, thanks to the development of machine learning in “deep networks”, we have experienced spectacular breakthroughs in diverse applications such as automatic interpretation of images, speech recognition, consumer profiling, or go and chess playing. Algorithms are now competing with the best professionals at analyzing skin cancer symptoms or detecting specific anomalies in radiology; and much more is to come. Worrisome perspectives are frequently raised, from massive job destruction to autonomous decision-making “warrior” robots. In this talk, we shall open the black box of deep networks and explore how they are programmed to learn from data by themselves. This will allow us to understand their limits, to question whether their achievements have anything to do with “intelligence”, and to reflect on the foundations of scientific intelligence The second and third lectures in this year's series will take place as follows: Lecture 2 (Tuesday 28 January @ 16.30 hrs) "The spin glass cornucopia" Lecture 3 (Wednesday 29 January @ 11.00 hrs) "Statistical physics of inference and machine learning" See separate entries in the scientific calendar for related details. The talks will be livestreamed from the ICTP website. Light refreshments will be served afterwards. All are welcome to attend the events. The Abdus Salam Distinguished Lecture Series receives generous support from the Kuwait Foundation for the Advancement of Sciences (KFAS). For more information see: https://kfas.ictp.it/ ICTP ICTP pio@ictp.it

Seminar

27 Jan 2020

@ ICTP

Salam Distinguished Lectures 2020 by Prof. Marc Mézard. Lecture 1: Artificial Intelligence: success, limits, myths and threats

Address: Strada Costiera 11 34151

Room: Leonardo Building - Budinich Lecture Hall

Speaker(s): Professor Marc Mézard, Director, l'École normale supérieure, Paris, France

Seminar Start Time: 16:30

Europe/Rome Sine-Gordon model is a paradigmatic integrable quantum field theory featuring strongly correlated dynamics, topological excitations, bound states and strong-weak coupling duality. It is also realised experimentally, allowing us to submit theoretical ideas to reality check. In this talk I overview a number of recent results concerning its non-equilibrium dynamics following a (global) quantum quench, highlighting results as well as outstanding challenges. SISSA Via Bonomea 265 ICTP pio@ictp.it

Seminar

28 Jan 2020

@ SISSA Via Bonomea 265

Condensed Matter and Statistical Physics

Joint ICTP/SISSA Statistical Physics Seminar: Quantum Quenches in Sine-Gordon Theory: Progress and Challenges

Speaker(s): Gábor TAKÁCS (Budapest University of Technology and Economics, Hungary)

Seminar Start Time: 11:30

Europe/Rome Professor Marc Mézard, Director of l’École normale supérieure, Paris, France, will deliver the Abdus Salam Distinguished Lecture Series 2020. The second talk in the series on "The spin glass cornucopia" will take place on Tuesday 28 January @ 16.30 hrs. Abstract: Motivated originally by some anomalies in the magnetic response of some magnetic alloys, spin glass theory has developed in the last 40 years into a vast research field. Apart from providing a theoretical framework for understanding glassy phases in various physical systems, it has also provided a corpus of concepts and methods, like the replica and the cavity method, that have found applications in various other branches of science, where one is interested in emerging properties in systems built from many interacting elementary components: computer science, information theory, economy, biology, etc. This talk will review some of the basic concepts and methods originating from spin glass theory, and present some aspects of their relevance to other fields Lecture 3 follows on Wednesday 29 January @ 11.00 hrs) and is on "Statistical physics of inference and machine learning". The three talks will be livestreamed from the ICTP website. Light refreshments will be served afterwards. All are welcome to attend the events. Biosketch: Marc Mézard is a theoretical physicist. He received a PhD from Ecole Normale Supérieure in Paris, followed by a post-doc in Rome, and became the head of the statistical physics group in Paris-Sud University. He has been the director of École normale supérieure since 2012. His main field of research is the statistical physics of disordered systems and its use in various branches of science - biology, economics and finance, information theory, computer science, statistics, and signal processing. In recent years his research has focused on information processing in neural networks. He has received the Lars Onsager prize from the American Physical Society, the Humboldt-Gay-Lussac prize, the silver medal of CNRS and the Ampere prize of the French Academy of Science. He is a member of the European Academy of Science. The Abdus Salam Distinguished Lecture Series receives generous support from the Kuwait Foundation for the Advancement of Sciences (KFAS). For more information see: https://kfas.ictp.it/ ICTP ICTP pio@ictp.it

Seminar

28 Jan 2020

@ ICTP

Salam Distinguished Lectures 2020 Prof. Marc Mézard. Lecture 2: The spin glass cornucopia

Address: Strada Costiera 11 34151 Trieste, Italy

Room: Leonardo Building - Budinich Lecture Hall

Speaker(s): Professor Marc Mézard, Director, l'École normale supérieure, Paris, France

Seminar Start Time: 16:30

Europe/Rome The west African monsoon (WAM) originates in the gulf of Guinea, when the intertropical convergence zone (ITCZ) makes its landfall. The south Asian monsoon (SAM) originates in the Indian ocean when the ITCZ crosses the equator. Historically, these monsoons as been seen as giant sea breezes; but now days, it has been recognized that the low-level convergence due to the increased friction after landfall plays an important role in monsoonal flows. Thus, in this study we have implanted an Ekman frictional layer (EFL) in Gill’s tropospheric model for studying the mutual influence between WAM and SAM. Results show that WAM has an influence on SAM via Kelvin modes by driving a Walker-like circulation with the lower-level westerlies and he upper-level easterlies over the Tropical Indian ocean, and that SAM has an influence over WAM via long planetary modes by driving the subsidence over the north African deserts. In the upper-layer, air particles spiral-out anticyclonically away from SAM and from WAM, reaching the Tropical Atlantic and the Tropical Indian ocean, or transiting into the southern hemisphere by crossing the equator. In the absence of orography, marine air particles spiral-in cyclonically towards WAM or SAM, the latter been a preferred ending destination. The Somali mountains (SM), introduced as a barrier to the Ekman winds, split the lower cyclonic circulation in two cyclones, separating the ketch basin of WAM from that of SAM. Thus, marine air particles originated to the west of SM stay in the ketch basin of WAM; whilst, marine air particles, originated over the Indian ocean, stay in the ketch basin of SAM. The Indian Ghats (IG), introduced as a semi-impermeable barrier to the Somali jet, lift the marine air particles carried by this jet into SAM; whilst, particles originated in the eastern Indian ocean reach the eastern flank of SAM. ICTP ICTP pio@ictp.it

Seminar

29 Jan 2020

@ ICTP

Studying monsoonal flows with Gill’s model with an Ekman layer

Address: Via Beirut 2-4

Room: ExSISSA Central Area

Speaker(s): Giovanni A. Dalu, Italian National Research Council, IBIMET, Rome

Seminar Start Time: 10:00

Europe/Rome Professor Marc Mézard, Director of l’École normale supérieure, Paris, France, will deliver the Abdus Salam Distinguished Lecture Series 2020. The third and last talk in the 2020 series will take place on Wednesday 29 January 2020 @ 11.00 hrs in the Budinich Lecture Hall. Abstract: A major challenge of contemporary statistical inference is the large-scale limit, where one wants to discover the values of many hidden parameters, using large amount of data. In recent years, ideas from statistical physics of disordered systems, notably the cavity method, have helped to develop new algorithms for important inference problems, ranging from error correcting codes in information theory to compressed sensing, machine learning and generalized linear regression. The talk will review these developments and explain how they can be used, together with the replica method, to identify phase transitions in benchmark statistical ensembles of inference problems. The talk will be livestreamed from the ICTP website. All are welcome to attend the events. Biosketch: Marc Mézard is a theoretical physicist. He received a PhD from Ecole Normale Supérieure in Paris, followed by a post-doc in Rome, and became the head of the statistical physics group in Paris-Sud University. He has been the director of École normale supérieure since 2012. His main field of research is the statistical physics of disordered systems and its use in various branches of science - biology, economics and finance, information theory, computer science, statistics, and signal processing. In recent years his research has focused on information processing in neural networks. He has received the Lars Onsager prize from the American Physical Society, the Humboldt-Gay-Lussac prize, the silver medal of CNRS and the Ampere prize of the French Academy of Science. He is a member of the European Academy of Science The Abdus Salam Distinguished Lecture Series receives generous support from the Kuwait Foundation for the Advancement of Sciences (KFAS). For more information see: https://kfas.ictp.it/ ICTP ICTP pio@ictp.it

Seminar

29 Jan 2020

@ ICTP

Salam Distinguished Lectures 2020 by Prof. Marc Mézard. Lecture 3: Statistical physics of inference and machine learning

Address: Strada Costiera 11 34151 Trieste, Italy

Room: Leonardo Building - Budinich Lecture Hall

Speaker(s): Professor Marc Mézard, Director, l'École normale supérieure, Paris, France

Seminar Start Time: 11:00

Europe/Rome Abstract: Suppose you have a vector space with the action of a Lie group. If you give it to a string theorist they might build a gauged linear sigma model, and if you give it to an algebraic geometer they might take the geometric invariant theory quotients. It turns out the string theory can then make interesting predictions for the algebraic geometer, particularly about how the derived categories of the different quotients are related. I'll explain some of this picture and what we understand about it mathematically. ICTP ICTP pio@ictp.it

Seminar

29 Jan 2020

@ ICTP

Mathematics

GIT and B-brane monodromy

Room: Leonardo Building - Luigi Stasi Seminar Room

Speaker(s): Edward Segal (University College London)

Seminar Start Time: 14:00

Seminar

30 Jan 2020

@ SISSA

Mathematics

ALGEBRAIC GEOMETRY SEMINAR - Overview of the seminar on scattering diagrams and motivic Hall algebras

Room: Room 136

Speaker(s): Alejandra Rincon Hidalgo (ICTP)

Seminar Start Time: 16:30

Europe/Rome This Preparatory School will provide a concise overview of key concepts that might not be so familiar to several of the participants, but that will be important to fully benefit from the more specialized lectures during the Winter College. The lectures will include reviews of general subjects in physics such as electromagnetic theory and quantum mechanics, as well as of more specialized ones such as statistical optics and the angular momentum of light. Relevant mathematical techniques including linear algebra and Fourier theory will also be covered. The lectures will be supplemented with two lab sessions and a computer simulation session, in order to illustrate some of the topics in the lectures. ICTP ICTP pio@ictp.it

Activity

3 Feb 2020 - 7 Feb 2020

@ ICTP

Preparatory School on Optics: Quantum Photonics and Information | (smr 3423)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH); UN Room

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Veronica Ahufinger (Universitat Autònoma de Barcelona), Miguel Alonso (Centrale Marseille, Institut Fresnel, Aix Marseille Univ. - Univ. of Rochester), Angelo Bassi (University of Trieste), Mauro Paternostro (Queen's University Belfast), Local Organiser: Joseph Niemela

Cosponsor(s): International Society for Optics and Photonicsspie, Società Italiana di Ottica e Fotonicasiof, International Commission for Opticsico, The Optical Societyosa, European Optical Societyeos, International Society on Optics Within Life Sciencesowls

Support E-Mail: smr3423@ictp.it

**DEADLINE: 28/10/2019**

Europe/Rome Abstract. In the last few years, quantum computational complexity from quantum information theory has become a thriving topic of research in the high-energy community due to its relationship to black holes. This relation stems from the AdS/CFT correspondence, which relates the properties of quantum field theories to those of gravitational systems. I will describe these developments in detail. In particular, I will discuss our progress towards understanding complexity for quantum field theory states and the study of the relevant dual gravitational observables. I will explain the implications of these ideas on studying the interior of black holes. ICTP ICTP pio@ictp.it

Seminar

4 Feb 2020

@ ICTP

Strings and Higher Dimensional Theories

On the Complexity of Black Holes

Room: Leonardo Building - Luigi Stasi Seminar Room

Speaker(s): Shira CHAPMAN (University of Amsterdam, The Netherlands)

Seminar Start Time: 14:30

Seminar

5 Feb 2020

@ ICTP

Strings and Higher Dimensional Theories

New Swampland Conjectures

Room: Leonardo Building - Euler Lecture Hall

Speaker(s): Cumrun VAFA (Harvard University, USA)

--- Please note change in venue!!! ---

Seminar Start Time: 14:30

Europe/Rome Flexoelectricity, describing the polarization response to a gradient of the strain, is a universal property of all insulators that has attracted considerable attention in the past few years. [1] In spite of its fundamental and practical interest, it has long resisted theoretical attempts at quantifying it with predictive accuracy in realistic materials. In this talk, I will introduce the methodological advances that have recently lifted this limitation in the context of first-principles electronic-structure theory. [2] I will discuss applications to perovskite-structure SrTiO3, either in the cubic [3] or ferroelastic tetragonal phase. [4] I will also emphasize the generality of these newly established theoretical tools, with interesting connections to the physics of orbital magnetism, natural optical activity and magnetoelectric couplings. [1] M. Stengel and D. Vanderbilt, in "Flexoelectricity in Solids From Theory to Applications", edited by A. K. Tagantsev and P. V. Yudin (World Scientific Publishing Co., Singapore, 2016). [2] Miquel Royo and Massimiliano Stengel, Phys. Rev. X 9, 021050 (2019) [3] M. Stengel, Phys. Rev. B 90, 201112(R) (2014) [4] Andrea Schiaffino and Massimiliano Stengel, Phys. Rev. Lett. 119, 137601 (2018) ICTP ICTP pio@ictp.it

Seminar

6 Feb 2020

@ ICTP

Condensed Matter and Statistical Physics

CMSP News and Views Seminars: First Principles Theory of Flexoelectricity and Related Materials Properties

Room: Leonardo Building - Luigi Stasi Seminar Room

Speaker(s): Massimiliano STENGEL (Catalan Institution for Research and Advanced Studies ICREA, CSIS-ICMAB, Bellaterra, Spain)

Seminar Start Time: 11:00

Europe/Rome Abstract. I will discuss the possibility of looking for sub-MeV dark matter using superfluid helium-4, which is currently the most promising proposal for such a mass range. In particular, I will employ the recently developed relativistic effective theory for the superfluid phonon to describe the response of the detector to the passing dark matter. Being formulated in a quantum field theory language, this approach is particularly suitable for a particle physics problem like the one at hand, and presents several advantages with respect to the standard techniques. I will apply the formalism to a model of dark matter with both a scalar and vector mediator, and discuss what kind of constraints such an experiment can put on these model. ICTP ICTP pio@ictp.it

Seminar

6 Feb 2020

@ ICTP

Phenomenology of Particle Physics

Sub-MeV dark matter detection with superfluid He-4: an effective theory approach

Room: Leonardo Building - Luigi Stasi Seminar Room

Speaker(s): Angelo ESPOSITO (EPFL, Lausanne, Switzerland)

Seminar Start Time: 14:30

Seminar

6 Feb 2020

@ SISSA

Mathematics

Scattering diagrams and the reconstruction theorem of Kontsevich-Soibelman

Address: Via Bonomea, 265, Trieste

Room: Boris Dubrovin Lecture room (A-136)

Speaker(s): Veronica Fantini (SISSA)

For further information about the seminar please visit http://users.ictp.it/~arincon/AGS.html

Seminar Start Time: 16:30

Europe/Rome The aim of the Winter College is to offer Ph.D. students and early career researchers training in quantum optics and quantum information. The College will also offer insight in the new quantum technologies involving the generation and manipulation of photonic and matter-like states. Quantum Optics, which studies how individual quanta of light interact with atoms and molecules, has been one of the most active research fields in the last years. Such endeavours have led to a deep understanding of the fundamental properties of light-matter interaction and its use to control and engineer quantum systems. Currently, taking advantage from properties like entanglement, nonlocality and coherence, photons and atoms are the key elements for quantum technologies applications. In particular, quantum information science has flourished everywhere in the world, including developing countries. Theoretical and experimental research is thriving, and leading the way to new technological developments. The Winter College will present the basic concepts as well as the most up-to-date research in Quantum Optics. An ICTP PREPARATORY SCHOOL will be organized the week before the College (from 4 - 8 February 2020) for a limited number of selected participants: http://indico.ictp.it/event/9020/ Topics: • Introduction to Quantum Optics • From Quantum Optics to Quantum Information • Open quantum systems • Modern Technologies for Quantum Photonics • Hybrid quantum optics platforms for quantum technologies • Quantum optics platforms for quantum simulation • Continuous-variable quantum information processing • Quantum cyber-security • Quantum optomechanics • Machine learning for quantum technologies • Beyond quantum mechanics Lecturers: M. Barbieri, University Roma Tre (Italy) A. Bassi, University of Trieste (Italy) I. Bloch, LMU, Munich and Max Plank Institute for Quantum Optics (Germany) B. Brecht, University of Paderborn (Germany) M. Carlesso, University of Trieste (Italy) M. Danailov, ELETTRA (Italy) I. De Vega, LMU Munich (Germany) V. Dunjko, Leiden University (The Netherlands) E. Karimi, University of Ottawa (Canada) V. Karimipour, Sharif University of Technology (Iran) M. Kim, Imperial College London (UK) K.-S. Lim, University of Malaya (Malaysia) M. Malik, Heriot-Watt, Edinburgh (UK) M. Palma, University of Palermo (Italy) S. Pirandola, University of York (UK) O. Romero-Isart, Institute for Quantum Optics and Quantum Information (Austria) A. Serafini, University College London (UK) Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

10 Feb 2020 - 21 Feb 2020

@ ICTP

Winter College on Optics: Quantum Photonics and Information | (smr 3424)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Budinich Lecture Hall (LB)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Veronica Ahufinger (Universitat Autònoma de Barcelona), Angelo Bassi (University of Trieste), Mauro Paternostro (Queen's University Belfast), Local Organiser: Joseph Niemela

Support E-Mail: smr3424@ictp.it

**DEADLINE: 28/10/2019**

Seminar

11 Feb 2020

@ SISSA

Mathematics

ALGEBRAIC GEOMETRY SEMINAR - Moduli of representation of quivers and first examples of scattering diagrams

Room: Lecture Room 134

Speaker(s): Michele Graffeo (SISSA)

Seminar Start Time: 16:30

Europe/Rome In recent years, Solid State Nuclear Magnetic Resonance (NMR) has given us the chance to observe surprising dynamical emergent phenomena [1]. This is possible because this technique addresses spins in the thermodynamic limit. We have addressed two phenomena: A) the polarization a spin dimmer, may have a Rabi oscillation that becomes an overdamped polarization transfer when the interaction with a spin environment becomes enough strong as compared with the Rabi frequency [2]. B) A dipolar scaled dynamics [2], which is seen as an apparent spin-diffusion through the study of Out of Time Order Correlations (OTOCs) associated with collective polarization. However, when the Hamiltonian strength is weak respect to uncontrollable residual interactions, Loschmidt Echo experiments reveals that dynamical transition from a reversible dynamics to an irreversible one whose time constant is fixed by the Hamiltonian itself, not by the residual interactions. This intrinsic irreversibility, shows that one should be careful in applying the Schrödinger Equation to many-body systems in the thermodynamic limit. [1]- Attenuation of polarization echoes in NMR: A test for the emergence of Dynamical Irreversibility in Many-Body Quantum Systems. PR Levstein, G Usaj, HM Pastawski; J. Chem. Phys. 108, 2718-2724 (1998) [2]- Environmentally induced quantum dynamical phase transition in the spin swapping operation. GA Álvarez, EP Danieli, PR Levstein, and HM Pastawski. J. Chem. Phys. 124, 1 (2006) [3]-Emergent perturbation independent decay of the Loschmidt echo in a many-body system -Phys. Rev. Lett. (2020-in press) arXiv 1902.06628 CM Sánchez, AK Chattah, KX Wei, L Buljubasich, P Cappellaro, and HM Pastawski, https://docs.google.com/document/d/1rJAySKRmj_iNXi6djMd6vZ4Bb3dNpVWrc3OjIO6Rkw8/edit?usp=sharing [4]-Loschmidt echo in many-spin systems: a quest for intrinsic decoherence and emergent irreversibility, PR Zangara and HM Pastawski. Phys. Scr. 92 033001(2017) ICTP ICTP pio@ictp.it

Seminar

12 Feb 2020

@ ICTP

Condensed Matter and Statistical Physics

CMSP Seminar: Emergent Behavior in Quantum Dynamics of Many-Body Systems: Quantum Dynamical Phase Transitions and Intrinsic Irreversibility Observed through NMR Loschmidt Echoes and OTOCs

Room: Leonardo Building - Luigi Stasi Seminar Room

Speaker(s): Horacio M. PASTAWSKI (Inst. de Fisica Enrique Gaviola and Facultad Matematica, Astronomia, Fisica y Computacion, Universidad Nacional de Cordoba, Argentina)

Seminar Start Time: 11:00

Europe/Rome Earth’s asthenosphere (the 100-200 km thick shell underlying the lithosphere) plays a major role in controlling how the motions of tectonic plates evolve through time. However, uncertainties in the asthenosphere geometrical and rheological properties (i.e., its thickness and viscosity) have in the past hampered our ability to make inferences on the forces controlling plate-motion changes, and thus on the geological processes ultimately responsible for them. Recent constraints on asthenospheric properties drawn from global analyses of post-glacial rebound data alleviate this problem, but the observations on which they rely span time periods in the order of 10^3 years that are significantly shorter than the typical time-scales of plate-motion changes (10^5 to 10^6 yr). I will initially bring evidence suggesting that the properties of Earth’s asthenosphere inferred from post-glacial rebound (i.e., over 10^3 yr) remarkably apply also to the more sluggish plate dynamics (i.e., over 10^6 to 10^7 yr). I will then show how this inference offers new opportunities for the use of plates and microplates dynamics in order to assess the hazard associated with earthquake-prone crustal faults. ICTP ICTP pio@ictp.it

Seminar

12 Feb 2020

@ ICTP

Earth System Physics

Constraints on Earth's rheology from post-glacial rebound analyses can help mitigate seismic risk

Room: Leonardo Building - Euler Lecture Hall

Speaker(s): Giampiero Iaffaldano, University of Copenhagen

Seminar Start Time: 11:00

Europe/Rome Memory is one of the core brain functions of animals. Memories are distributed across cortical structures and have various time scales, ranging e.g. from sensory memory, short-term memory to long term memory. How memories are organized as a deep network is a critical question both for neuroscience and artificial intelligence research. In this talk, I will review recent progress in understanding the spatial memory circuits in the brain, and discuss neural network models of cognitive map. By understanding the dynamics and computational mechanisms of the memory circuits, it is possible to find a path to understand and create intelligence. ICTP ICTP pio@ictp.it

Seminar

13 Feb 2020

@ ICTP

Quantitative Life Sciences

Towards Deep Network of Memory

Address: Via Beirut, 2

Room: Central Area, 2nd floor, old SISSA building

Speaker(s): Bailu Si, Brain and Autonomous Intelligent Robots Lab School of Systems Science, Beijing Normal University

Support E-Mail: qls@ictp.it

Seminar Start Time: 11:00

Europe/Rome Abstract. The LSND and MiniBooNE results as well as the reactor and Gallium anomalies seem to indicate the presence of a sterile neutrino with a mass of ∼1 eV mixed with active neutrinos. Such sterile neutrino can be produced in the early universe before the neutrino decoupling, leading to a contribution to the effective number of neutrinos ( Neff ) as well as to a contribution to the sum of neutrino masses which are in tension with cosmological observations. We propose a scenario to relax this tension by a Yukawa coupling of the sterile neutrinos to ultra-light scalar particles which contribute to the dark matter in the background. The coupling induces an effective mass for νs which prevents its production in the early universe. We discuss the implications for the upcoming KATRIN experiment and future relic neutrino search experiments such as PTOLEMY. We also briefly comment on certain non-renormalizable forms of interaction between νs and the scalar and their consequences for the νs production in the early universe. ICTP ICTP pio@ictp.it

Seminar

13 Feb 2020

@ ICTP

Phenomenology of Particle Physics

Ultra-light scalar saving the 3 + 1 neutrino scheme from the cosmological bounds

Room: Leonardo Building - Luigi Stasi Seminar Room

Speaker(s): Yasaman FARZAN (IPM, Tehran, Iran)

Seminar Start Time: 14:30

Europe/Rome SLIDES + other material available at: https://github.com/marcozennaro/uganda-2020 Directors: N. Bonimpa, Research and Education Network for Uganda (RENU) L. Chemane, Mozambique Research and Education Network (MoRENet) M. Kashorda, Kenya Education Network (KENET) M. Mushi, Tanzania Education and Research Network (TERNET) J. Sansa-otim, Makarere University, Uganda M. Zennaro, ICTP, Italy ICTP Scientific Contact: M. Zennaro, ICTP, Italy The involvement of National Research and Education Networks (NREN) in East Africa is key for the growth of Internet of Things (IoT) applications in the region, as they can host the access infrastructure to foster research in IoT and to serve the IoT community at large. The growth of the Internet of Things will depend crucially on the establishment of a low cost infrastructure to handle traffic generated by IoT nodes. Low Power Wide Area Network (LPWAN) solutions based on open standards that address the requirements of scalability, heterogeneity, security and complexity will be presented in the Workshop. We will focus on The Things Network (TTN), an initiative to build a world-wide open source infrastructure to facilitate a public Internet of Things. TTN operates by allowing users to share the access to gateways. We think NRENs in the region should play a leading role in hosting this infrastructure. As TTN allows for low-bandwidth communications over long distances, it can facilitate the deployment of applications relevant to East African countries. Topics: • Wireless solutions for IoT; • LoRa and LoRaWAN protocols; • Prototyping of sensor boards; • Planning and deployment of a LPWAN network; • Collection and visualization of the data. Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from East Africa. There is no registration fee. The Workshop is organized in collaboration with: UbuntuNet Alliance Internet Society MoRENet - Mozambique Research and Education Network Makarere University, Uganda Kenet - Kenya Education Network RENU - Research and Education Network for Uganda TERNET - Tanzania Education Research Network NSRC - Network Startup Resource Center Makerere - Uganda ICTP pio@ictp.it

Activity

17 Feb 2020 - 21 Feb 2020

@ Makerere - Uganda

New Research Areas (Information and Computer Technology, Physics and Development)

Workshop on LPWAN Solutions for the Internet of Things | (smr 3437)

Secretary: Doreen Sauleek

Organizer(s): Lourino Chemane (Mozambique Research and Education Network (MoRENet), Mozambique), Meoli Kashorda (Kenya Education Network (KENET), Kenya), N. Mbonimpa (Research & Education Network for Uganda (RENU), Uganda), Magreth Mushi (Tanzania Education and Research Network (TERNET), Tanzania), Julianne Sansa-Otim (Makerere University, Uganda), ICTP Scientific Contact: Marco Zennaro

Cosponsor(s): Internet Societyisoc2, Makerere Universitymak_univ, UbuntuNet Alliance For Research & Education Networkingubuntunet, Research and Education Network for Ugandarenu, Kenya Education Networkkenet, The Mozambique Research and Education Networkmorenet, Tanzania Education and Research Networkternet, Network Startup Resource Centernsrc

**DEADLINE: 06/12/2019**

Activity

18 Feb 2020

@ ICTP

TSOSA Meeting 2020 | (smr 3496)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Oppenheimer Meeting Room (LB)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Veronica Ahufinger (Universitat Autònoma de Barcelona), Angelo Bassi (University of Trieste), Mauro Paternostro (Queen's University Belfast), Local Organiser: Joseph Niemela

Support E-Mail: smr3424@ictp.it

Europe/Rome Abstract. The vanilla Higgs inflation introduces a large non-minimal coupling between the Ricci scalar and Higgs that causes tree-level unitarity violation well below the Planck scale. After reviewing the unitarity issue during and after inflation, we show that the unitarity can be restored by summing over vacuum polarization-type diagrams. The scattering amplitude develops a pole after the resummation, which we identify as the scalar component of the metric, or the scalaron. It suggests that the Higgs inflation is actually a multi-field inflation model, i.e. Higgs nad the scalaron, and does not suffer from the unitarity issue. ICTP ICTP pio@ictp.it

Seminar

18 Feb 2020

@ ICTP

Phenomenology of Particle Physics

Higgs inflation, unitarity, and emergence of scalaron

Room: Leonardo Building - Luigi Stasi Seminar Room

Speaker(s): Yohei EMA (DESY, Hamburg)

Seminar Start Time: 14:30

Europe/Rome Abstract. Not every effective theory of fields and gravitational interactions at low energy can be embedded into a consistent theory of gravity at short distances. I will discuss how fundamental properties of scattering amplitudes, such as unitarity and causality of the underlying fundamental theory, can be used to spot inconsistent theories of gravity at low-energy, and hence throw them in the so-called EFT "swampland". I will focus on three main applications: the weak gravity conjecture for the physics of extremal black holes; and modified gravity theories such as Galileons and massive gravity, of interest for late-time cosmology. ICTP ICTP pio@ictp.it

Seminar

20 Feb 2020

@ ICTP

Phenomenology of Particle Physics

Impossible Theories of Gravity

Room: Leonardo Building - Luigi Stasi Seminar Room

Speaker(s): Brando BELLAZZINI (IPHT, Paris, France)

Seminar Start Time: 14:30

Europe/Rome Abstract: The goal of this talk is to construct the quotient stack by a smooth group scheme and to see that it is an Artin stack. The talk will be divided into four parts. First, we define the algebraic space over a fixed scheme S. Algebraic spaces are sheaves on the big étale site Sch/S with the representable diagonal morphism and an étale covering. Then, we give the original definition of the stack. Stacks are categories fibered in groupoid over a site for which every covering is of effective descent. We also provide a necessary and sufficient condition for a category fibered in groupoid to be a stack. Third, we define the Artin stack. Artin stacks are stacks over the big étale site Sch/S with the representable diagonal morphism and an smooth covering. Here, algebraic spaces play a role to describe property of morphisms of stacks. Finally, given a smooth group scheme G acting on a scheme X over S, we construct the quotient [X/G] and check that [X/G] satisfies the all conditions to be a stack, moreover an Artin stack. If time allows, we will provide some examples of quotient stacks. SISSA ICTP pio@ictp.it

Seminar

20 Feb 2020

@ SISSA

Mathematics

Introduction to stacks

Address: Via Bonomea, 265, Trieste

Room: Room 133

Speaker(s): Hayato Morimura (SISSA)

For further information about the seminar please visit: http://users.ictp.it/~arincon/AGS.html

Seminar Start Time: 16:30

Europe/Rome --- IMPORTANTE NOTICE: SCAM ALERT! ICTP has been reported cases of unsolicited phone calls from a travel agency pretending to make hotel reservations on behalf of its activitiesl: Please do NOT disclose any sensitive information, it is a fraudulent attempt to collect credit card data! No agency has been delegated to take care of accomodation arrangements for this activity, and communications on this matter will occur through official channels only. In case of any doubt, or should you receive any similar request, please contact the ICTP Secretariat at smr3426@ictp.it --- This SCHOOL is part of a two-week event consisting of Week 1: School on Quantum Information Theory and Thermodynamics at the Nanoscale (24 - 28 February 2020) Week 2: Workshop on Quantum Information Theory and Thermodynamics at the Nanoscale (2 - 6 March 2020). Pre-arrival practical Information provided by the organizers in Morocco * * * LECTURE-RELATED SLIDES are being uploaded here! (updated 24.04.2020) FINAL SCHOOL PROGRAMME is available for download here ======================================================= The topics of these activities (School, 24 - 28 February, and Workshop, 2 - 6 March) are at the forefront of current research in the field of quantum technologies, a fast growing research area involving questions of both fundamental and practical relevance. What are role and value of coherence and entanglement in solid state devices in quantum information, and in the working and efficiency of mesoscopic quantum engines? What are the mechanisms behind thermalization of closed quantum systems and what is the role of non-Markovianity in the physics of quantum information? These and other issues will be covered during the School and subsequent Workshop addressed to graduate students and junior researchers, providing them with the opportunity of a good training and the possibility to meet some leading experts in the field. Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. Topics: Open Quantum Systems Non-equilibrium Quantum Dynamics Complex Quantum Systems Quantum Machine Learning Many-body Quantum Systems Physical Foundations of Quantum Information Lecturers: Giuliano BENENTI, University of Insubria, Italy Andreas BUCHLEITNER, Albert-Ludwigs University of Freiburg, Germany Steve CAMPBELL, University College Dublin, Ireland Dariusz CHRUŚCIŃSKI, Nicolaus Copernicus University of Torun, Poland Elisa ERCOLESSI, University of Bologna, Italy Matteo PARIS, University of Milano, Italy Related Workshop webpage: http://indico.ictp.it/event/9155/ ICTP Secretariat for both School and Workshop on Quantum Information Theory and Thermodynamics at the Nanoscale (24 February - 6 March 2020): Nicoletta Ivanissevich, e-mail: smr3426@ictp.it Al Hoceima - Morocco ICTP pio@ictp.it

Activity

24 Feb 2020 - 28 Feb 2020

@ Al Hoceima - Morocco

Condensed Matter and Statistical Physics

School on Quantum Information Theory and Thermodynamics at the Nanoscale | (smr 3426)

Secretary: Nicoletta Ivanissevich

Organizer(s): Alexia Auffèves (Institut Néel-CNRS, Grenoble), Fabio Benatti (University of Trieste), Abderrahim El Allati (University Abdelmalek Essaadi, Al Hoceima), Morad El Baz (University Mohammed V, Rabat), Yassine Hassouni (University Mohammed V, Rabat), Massimo Palma (University of Palermo), Mauro Paternostro (Queen's University, Belfast), ICTP Scientific Contact: Antonello Scardicchio

Cosponsor(s): Université Abdelmalek Essaadiuae, Faculté des Sciences et Techniques, Al-Hoceimaftsh, Facolté Pluridisciplinaire de Nadorfpn, Hassan II Academy of Science and Technologyhassan2, CNRST - Centre National pour la Recherche Scientifique et Techniquecnrst, Provincial Association for the Support of Proximity Activitiesapaap

------------ See also related Workshop on Quantum Information Theory and Thermodynamics at the Nanoscale (smr.3500), 2 - 6 March 2020 --- FIRST DEADLINE: 10 November 2019 --- SECOND DEADLINE 24 November 2019 (only for applicants not requesting financial support, nor needing visa)**DEADLINE: 10/11/2019**

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 15 May as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx SCHOOL AND WORKSHOP Antimicrobial Resistance (AMR) represents a major challenge to public health worldwide. Mobile elements such as plasmids play a crucial role in Horizontal Gene Transfer (HGT) and AMR spread. Understanding plasmid evolution and mobility is fundamental to unravel the population genetics of plasmid-encoded genes, especially antibiotic genes. The combination of breakthroughs in sequencing and computational approaches has led to a new vision of the eco-evolutionary processes involved in HGT dynamics of pathogens. The School and Workshop will focus on modelling efforts to integrate genomic, experimental and computational results, to build a unified framework to tackle the expansion of plasmid-borne AMR. The Workshop will be preceded by the one-week introductory School on bacterial evolution, population genetics and epidemiology. The School introduces general concepts in those disciplines and focuses on their applications to AMR and plasmids. State-of-the-art methods used in genetic research on plasmids will be covered. Invited Speakers and Lecturers include: Stephanie Bedhomme, CEFE/CNRS, Montpellier Sebastian Bonhoeffer, ETH Zurich Alessandra Carattoli, Sapienza University, Rome Trinad Chakraborty, JLU Gießen Teresa Coque, Hospital Universitario Ramón y Cajal Marco Cosentino Lagomarsino, IFOM and University of Milan Alejandro Couce, Imperial College London Linda Falgenhauer, JLU Gießen Luca Ferretti, Big Data Institute, Oxford Egil A.J. Fischer, University of Utrech Jacopo Grilli, ICTP James P. Hall, University of Liverpool Michael Lässig, University of Cologne Bruce Levin, Emory University James McInerney, University of Manchester Itzik Mizrahi, Ben-Gurion University Lulla Opatowski, Institut Pasteur in Paris Romualdo Pastor-Satorras, Universitat Politecnica de Catalunya Luca Peliti, San Marinella Research Institute Chiara Poletto, INSERM - Sorbonne University Alvaro San Millan, IRYCIS, Madrid Kornelia Smalla, Julius Kühn-Institut, Braunschweig Willem Van Schaik, University of Birmingham Rob Willems, UMC Utrecht Applications for the Workshop ONLY can be submitted here Applications for both the School and the Workshop can be submitted here We recognise the importance of childcare provision at conferences and are committed to supporting attendance of delegates with young children who would otherwise be unable to attend. While we are unable to provide on site childcare services, please contact us if you are in this position and you would like to apply. ICTP ICTP pio@ictp.it

Activity

24 Feb 2020 - 6 Mar 2020

@ ICTP

Quantitative Life Sciences

School and Workshop on Plasmids as Vehicles of Antimicrobial Resistance Spread * CANCELLED * | (smr 3425)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Fernando de la Cruz (Universidad de Cantabria & Instituto de Biomedicina y Biotecnología de Cantabria), Richard Neher (Biozentrum - University of Basel), Alice Ledda (Imperial College London), Local Organiser: Matteo Marsili

Cosponsor(s): MRC Centre for Global Infectious Disease Analysis Imperial College Londonmrc_gida

Support E-Mail: smr3425@ictp.it

**DEADLINE: 15/01/2020**

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 15 May as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx The Spring College on the Physics of Complex System has been officially CANCELLED All lectures available for Days 1 to 3 are on YouTube at https://www.youtube.com/playlist?list=PLRwcSE2bmyBytsdKY3F4h_v_-PQj8Aa7m ICTP ICTP pio@ictp.it

Activity

24 Feb 2020 - 20 Mar 2020

@ ICTP

Quantitative Life Sciences

Spring College on the Physics of Complex Systems * CANCELLED * | (smr 3427)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Secretary: Erica Sarnataro

Organizer(s): Alfredo Braunstein (Politecnico Torino), Andrea Gambassi (SISSA), Local Organiser: Matteo Marsili

Cosponsor(s): Politecnico di Torinopolito, SISSA-International School for Advanced Studiessissa, Université Franco Italienneufi, Politecnico di Torino Dipartimento SCIENZA APPLICATA E TECNOLOGIA (DISAT)disat1

Europe/Rome Note: ICTP has suspended all educational activities for the week of 24 February as a health precaution; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx Abstract: In this talk we discuss new constructions via non-reductive GIT of del Pezzo surfaces of degree 1 and 2 coming from the description as surfaces in weighted projective 3-folds. For degrees 1, 2 and 3 we discuss stratifications coming from GIT and compare these with geometric stratifications given by singularity type. ICTP ICTP pio@ictp.it

Seminar

25 Feb 2020

@ ICTP

Mathematics

Moduli of low degree del Pezzo surfaces and stratifications * POSTPONED *

Room: Leonardo Building - Luigi Stasi Seminar Room

Speaker(s): Dominic Bunnett (TU, Berlin)

Seminar Start Time: 16:00

Europe/Rome Note: ICTP has suspended all educational activities for the week of 24 February as a health precaution; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx Abstract: A classical problem in probability theory is to understand the behaviour of centred and scaled sums of independent identically distributed (iid) random variables. A well known result in this area is the central limit theorem which loosely states that if X_1, X_2, ... is an iid sequence of mean 0 random variables of finite variance then (1/\sqrt{n}) \sum_{j=1}^{n} X_j will converge in distribution to a Gaussian random variable. Generalisations of the central limit theorem exists for the case that the variance of the X_i is no longer finite, in this case the scaling 1/\sqrt{n} is altered and the limiting distribution may no longer be Gaussian. One may generalise even further and consider all weak limit points of the sequence (1/A_n)(\sum_{j=1}^n X_j). It turns out that under some very mild restrictions all the limit points of this sequence have distribution belonging to the same class - namely they are semi-stable. In this talk we will be interested in what happens when the iid sequence X_1, X_2, ... is replaced by a deterministic one. We will take a particular map T:[0,1] \to [0,1] (a so called wobbly intermittent map) and a function u:[0,1] \to R and replace the sequence X_1, X_2, ... with the sequence u, u \circ T, u \circ T^2, .... I will present recent work joint with M. Holland and D. Terhesiu in which we show that for all functions u belonging to wide class the sequence u, u \circ T, u \circ T^2, ... will satisfy semi-stable limit theorems. ICTP ICTP pio@ictp.it

Seminar

26 Feb 2020

@ ICTP

Mathematics

Semi-stable laws for wobbly intermittent maps * POSTPONED *

Room: Leonardo Building - Luigi Stasi Seminar Room

Speaker(s): Douglas Coates (Exeter University, UK)

Seminar Start Time: 14:00

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 15 May as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx Antimicrobial Resistance (AMR) represents a major challenge to public health worldwide. Mobile elements such as plasmids play a crucial role in Horizontal Gene Transfer (HGT) and AMR spread. Understanding plasmid evolution and mobility is fundamental to unravel the population genetics of plasmid-encoded genes, especially antibiotic genes. The combination of breakthroughs in sequencing and computational approaches has led to a new vision of the eco-evolutionary processes involved in HGT dynamics of pathogens. The School and Workshop will focus on modelling efforts to integrate genomic, experimental and computational results, to build a unified framework to tackle the expansion of plasmid-borne AMR. The Workshop will be preceded by the one-week introductory School on bacterial evolution, population genetics and epidemiology. The School introduces general concepts in those disciplines and focuses on their applications to AMR and plasmids. State-of-the-art methods used in genetic research on plasmids will be covered. Invited Speakers and Lecturers include: Stephanie Bedhomme, CEFE/CNRS, Montpellier Sebastian Bonhoeffer, ETH Zurich Alessandra Carattoli, Sapienza University, Rome Trinad Chakraborty, JLU Gießen Teresa Coque, Hospital Universitario Ramón y Cajal Marco Cosentino Lagomarsino, IFOM and University of Milan Alejandro Couce, Imperial College London Luca Ferretti, Big Data Institute, Oxford Jacopo Grilli, ICTP Lars Hansen, University of Copenhagen Michael Lässig, University of Cologne Bruce Levin, Emory University James McInerney, University of Manchester Itzik Mizrahi, Ben-Gurion University Romualdo Pastor-Satorras, Universitat Politecnica de Catalunya Chiara Poletto, INSERM - Sorbonne University Adam Roberts, LSTM, Liverpool Alvaro San Millan, IRYCIS, Madrid Kornelia Smalla, Julius Kühn-Institut, Braunschweig Willem Van Schaik, University of Birmingham Arjan de Visser, Wageningen University Rob Willems, UMC Utrecht Applications for the Workshop ONLY can be submitted here Applications for both the School and the Workshop can be submitted here We recognise the importance of childcare provision at conferences and are committed to supporting attendance of delegates with young children who would otherwise be unable to attend. While we are unable to provide on site childcare services, please contact us if you are in this position and you would like to apply. ICTP ICTP pio@ictp.it

Activity

2 Mar 2020 - 6 Mar 2020

@ ICTP

Quantitative Life Sciences

Workshop on Plasmids as Vehicles of Antimicrobial Resistance Spread | * CANCELLED * | (smr 3498)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Cosponsor(s): MRC Centre for Global Infectious Disease Analysis Imperial College Londonmrc_gida

Support E-Mail: smr3425@ictp.it

**DEADLINE: 15/01/2020**

Europe/Rome --- IMPORTANTE NOTICE: SCAM ALERT! ICTP has been reported cases of unsolicited phone calls from a travel agency pretending to make hotel reservations on behalf of its activitiesl: Please do NOT disclose any sensitive information, it is a fraudulent attempt to collect credit card data! No agency has been delegated to take care of accomodation arrangements for this activity, and communications on this matter will occur through official channels only. In case of any doubt, or should you receive any similar request, please contact the ICTP Secretariat at smr3426@ictp.it --- This WORKSHOP is part of a two-week event consisting of Week 1: School on Quantum Information Theory and Thermodynamics at the Nanoscale (24 - 28 February 2020) Week 2: Workshop on Quantum Information Theory and Thermodynamics at the Nanoscale (2 - 6 March 2020). UPDATE: because of the latest Covid-19 developments and their impact on flights with subsequent last minute cancellations, we are forced to shorten the Workshop, and end on Thursday 5 March 2020 Participants are invited to read this set of Practical Information provided by the organizers in Morocco * * * The WORKSHOP PROGRAMME* is available for download here *updated as of 3 March 2020 Please click here for the list of poster presentations. Because of the latest Covid-19 developments and their impact on flights with subsequent last minute cancellations, we are forced to shorten the Workshop, and end on Thursday 5 March 2020 ======================================================= The topics of these activities (School, 24 - 28 February, and Workshop, 2 - 6 March) are at the forefront of current research in the field of quantum technologies, a fast growing research area involving questions of both fundamental and practical relevance. What are role and value of coherence and entanglement in solid state devices in quantum information, and in the working and efficiency of mesoscopic quantum engines? What are the mechanisms behind thermalization of closed quantum systems and what is the role of non-Markovianity in the physics of quantum information? These and other issues will be covered during the School and subsequent Workshop addressed to graduate students and junior researchers, providing them with the opportunity of a good training and the possibility to meet some leading experts in the field. Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. Topics: Open Quantum Systems Non-equilibrium Quantum Dynamics Complex Quantum Systems Quantum Machine Learning Many-body Quantum Systems Physical Foundations of Quantum Information List of Speakers*: Mohammed AZZOUZ, International University of Rabat Morocco Adil BELHAJ, Université Mohammed V, Rabat, Morocco Koen BERTELS, Delft University of Technology, Netherlands Daniel BRAUN, Institut für Theoretische Physik Universität Tübingen, Germany Gabriele DE CHIARA, Queen's University of Belfast, UK Gian Luca GIORGI, IFISC, CSIC-UIB, Palma de Mallorca, Spain Nikolay KIESEL, University of Vienna, Austria Stefano MANCINI, University of Camerino, Italy Daniel MANZANO, University of Granada, Spain Gonzalo MANZANO PAULE, ICTP, Italy Mark MITCHISON, Trinity College, Dublin, Ireland Jorden SENIOR, Aalto University School of Science, Finland Bassano VACCHINI, La Statale University of Milan, Italy Robert WHITNEY, LPMMC CNRS Grenoble, France Karol ZYCZKOWSKI, Jagiellonian University, Krakow, Poland *updated on 1 March 2020 ======================================================= Because of the latest Covid-19 developments and their impact on flights with subsequent last minute cancellations, we are forced to shorten the Workshop, and end on Thursday 5 March 2020 ======================================================= Related School webpage: http://indico.ictp.it/event/9023/ ICTP Secretariat for both School and Workshop on Quantum Information Theory and Thermodynamics at the Nanoscale (24 February - 6 March 2020): Nicoletta Ivanissevich, e-mail: smr3426@ictp.it Al Hoceima - Morocco ICTP pio@ictp.it

Activity

2 Mar 2020 - 6 Mar 2020

@ Al Hoceima - Morocco

Condensed Matter and Statistical Physics

Workshop on Quantum Information Theory and Thermodynamics at the Nanoscale | (smr 3500)

Secretary: Nicoletta Ivanissevich

Organizer(s): Alexia Auffèves (Institut Néel-CNRS, Grenoble), Fabio Benatti (University of Trieste), Abderrahim El Allati (University Abdelmalek Essaadi, Al Hoceima), Morad El Baz (University Mohammed V, Rabat), Anass El Haddadi (University Abdelmalek Essaadi, Al Hoceima), Yassine Hassouni (University Mohammed V, Rabat), Taoufik Mourabit (University Abdelmalek Essaadi, Al Hoceima), Mauro Paternostro (Queen's University, Belfast), Massimo Palma (University of Palermo), Yahya Tayalati (University Mohammed V, Rabat), El Hassane Zerouali (University Mohammed V, Rabat), ICTP Scientific Contact: Antonello Scardicchio

Cosponsor(s): Université Abdelmalek Essaadiuae, Faculté des Sciences et Techniques, Al-Hoceimaftsh, Ecole Nationale des Sciences Appliquées d'Al-Hoceimaensah, Facolté Pluridisciplinaire de Nadorfpn, Hassan II Academy of Science and Technologyhassan2, CNRST - Centre National pour la Recherche Scientifique et Techniquecnrst, Provincial Association for the Support of Proximity Activitiesapaap

------------ See also related School on Quantum Information Theory and Thermodynamics at the Nanoscale (smr.3426), 24 - 28 February 2020 --- FIRST DEADLINE: 10 November 2019 --- SECOND DEADLINE: 24 November 2019 (only for applicants not requesting financial support, nor needing visa)**DEADLINE: 10/11/2019**

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 15 May as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx In this workshop we will present new advances in Citizen Science and we will try to understand how to balance low cost scientiﬁc tools and academic rigor. We will present several examples of successful Citizen Science projects, including nuclear monitoring, seismic sensors and air quality monitoring. Topics: Sustainable Development Goals and the role of technology 3D printing and the FabLab revolution Fast advances in low cost sensors and detectors Beneﬁts from advances in signal processing, analysis and transmission Statistical inference in scientific reasoning The role of inexpensive technology in Citizen Science What to do with data from Citizen Science Projects Open Access to data Practical work on the development of low cost nuclear radiation monitors, seismic sensors and air quality monitors. Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. In partnership with: ICTP ICTP pio@ictp.it

Activity

9 Mar 2020 - 20 Mar 2020

@ ICTP

Citizen Science with Application to Nuclear, Seismic and Air Quality Monitoring * CANCELLED * | (smr 3429)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Davide Storti (UNESCO), Francois Foulon (IAEA), Local Organiser: Marco Zennaro

Cosponsor(s): United Nations Educational, Scientific and Cultural Organizationunesco, International Atomic Energy Agencyiaea3

Support E-Mail: smr3429@ictp.it

**DEADLINE: 09/01/2020**

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 15 May as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx This hands-on activity brings together participants and resource persons from IT units/departments of scientific institutions that have deployed or are considering deploying small to medium sized HPC equipment to share standards, experiences and best-practices for the design, management of Data centers for HPC equipment. You must be from an IT unit/department to apply. Topics: Data Centre: Facilities planing; provisioning, networking and optimization of power and cooling, etc Installation, provisioning, configuration and maintenance of computer clusters/servers, storage and software. Day-to-day operations of HPC systems including systems administration, monitoring and performance optimization. Installation and maintenance of system software stack and tools, building and deploying open source software and supporting scientific applications. Other topics: Green data centers; harnessing cloud based resources. ICTP ICTP pio@ictp.it

Activity

9 Mar 2020 - 20 Mar 2020

@ ICTP

New Research Areas (High Performance Computing)

Hands-on Workshop on Design, Installation and Management of HPC Data Centers for Scientific Institutions * CANCELLED *| (smr 3430)

Address: via Beirut, 2-4 I - 34151 Trieste (Italy)

Room: ex SISSA Room D

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Guarav Bajpai (University of Rwanda, Rwanda), Hakizumwami Birali Runesha (University of Chicago, USA), Paul Caleja (Cambridge University, UK), Happy Sithole (CHPC/CSIR South Africa), Ivan Girotto (ICTP), Local Organiser: Clement Onime

Cosponsor(s): University of Cambridge, UKcambridge, University of Chicago, USAucm2, The National Integrated Cyber Infrastructure System (NICIS)nicis, Master in High Performance Computingmhpc2

Support E-Mail: smr3430@ictp.it

**DEADLINE: 07/01/2020**

Europe/Rome Quantum Information science is a discipline right at the intersection of physics, engineering, computer science and mathematics. The discipline is presently matured enough to produce new quantum technologies. The present school aims to provide a brief introduction to established ideas of quantum information science up to the level of establishing quantum technologies theoretically and experimentally. Students (advanced undergraduate and postgraduate) with quantum mechanics background will be able to learn rapidly this exciting field through the lectures and problem solving sessions of this school. To register for this school, participants need a minimum of undergraduate quantum mechanics background and support letter from supervisors or heads of departments. Please register at by 6 March 2020. ICTP pio@ictp.it

Seminar

16 Mar 2020 - 22 Mar 2020

EXPOSITORY QUANTUM LECTURE SERIES. Quantum Information: From theory to technology

Seminar Start Time: 17:00

Europe/Rome Eddie Farhi was trained as a theoretical particle physicist but has also worked on astrophysics, general relativity, and the foundations of quantum mechanics. Dr. Farhi obtained his B.A. and M.A. in physics at Brandeis University in the US before getting his Ph.D. in 1978 from Harvard University under the supervision of Howard Georgi. He was then on the staff at the Stanford Linear Accelerator Center and at CERN in Geneva, Switzerland before joining MIT in 1982. At MIT, Farhi taught undergraduate courses in quantum mechanics and special relativity. At the graduate level he has taught quantum mechanics, quantum field theory, particle physics and general relativity. He won three teaching awards at MIT and in 2000, 2001, and 2002 he lectured the freshman physics course, "8.01." From 2004 until 2016, he served as Director of MIT's Center for Theoretical Physics and in 2018 he retired from his position as the Cecil and Ida Green Professor of Physics at MIT. Edward Farhi is currently Principal Scientist at Google working on quantum computation. More details on the talk will follow. The event will be livestreamed from the ICTP website. All are most welcome to attend. ICTP ICTP pio@ictp.it

Colloquium

18 Mar 2020

@ ICTP

ICTP Colloquium by Dr. Eddie Farhi: POSTPONED UNTIL FURTHER NOTICE

Address: Strada Costiera 11 34151 Trieste, Italy

Room: Leonardo Building - Budinich Lecture Hall

Speaker(s): Dr. Eddie Farhi, Google, USA

Colloquium Start Time: 16:30

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 15 May as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx The two-week School is designed for early career professionals from developing countries, ideally with 1-3 years of experience, working at relevant institutions in their home country. Candidates should have a specific career interest in, or knowledge of nuclear security, although their academic and technical background may vary. Candidates with a scientific or technical background in a discipline of relevance to nuclear security, such as nuclear physics, nuclear engineering, political science, law enforcement, and/or in related fields are especially encouraged to apply. School curriculum will include the following topics: International legal framework supporting nuclear security Identification of, and measures to address, threats against nuclear material, facilities, and activities Instruments and methods for physical protection of associated facilities Threat and risk assessment, detection architecture, and response plan for material out of regulatory control Radiation detection instruments and detection strategies and techniques Transport security for nuclear and other radioactive material Nuclear forensics and radiological crime scene management Nuclear security culture, computer and information security, and security at major public events Measures for systematic nuclear security human resource development at the national level Prerequisites: As a prerequisite to admission to the School, all applicants will be asked to complete the following IAEA introductory e-learning modules on several topics in nuclear security: Overview of Nuclear Security Threats and Risks Nuclear Security Threats and Risks: Material and Facilities Nuclear Security Threats and Risks: Material Out of Regulatory Control Nuclear Security Threats and Risks: Cyber Threat Transport Security Information and Computer Security NMAC for Nuclear Security Radiological Crime Scene Management Physical Protection Preventive and Protective Measures against Insider Threat Use of Radiation Detection Instruments for Front Line Officers Introduction to Radioactive Sources and Their Applications The modules are available online: http://elearning.iaea.org/m2/course/index.php?categoryid=48 The estimated time for completing the courses is between 1 and 4.5 hours per module. Upon successful completion of each module, the system will generate a personalized certificate. Please submit all certificates of completion (as pdf or jpg files) with the online application form for this School. In case of technical issues, please contact: CLP4NET.Contact-Point@iaea.org Additionally, there will be practical exercises designed to incorporate the acquired knowledge into national planning and procedures to protect against threats to nuclear security. Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

23 Mar 2020 - 3 Apr 2020

@ ICTP

Joint ICTP-IAEA 2020 International School on Nuclear Security * CANCELLED * | (smr 3433)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Dmitriy Nikonov (IAEA), Local Organiser: Claudio Tuniz

Cosponsor(s): International Atomic Energy Agency (IAEA)iaea, Italian Ministry of Foreign Affairsmae3

Support E-Mail: smr3433@ictp.it

**DEADLINE: 06/12/2019**

Europe/Rome The School will be held on Zoom from 24 August to 4 September 2020 http://indico.ictp.it/event/9424/ VIRTUAL SUMMER SCHOOL on SUPERSTRING THEORY and RELATES TOPICS **************** The Spring School on Superstring Theory and Related Topics (26 March - 3 April 2020) was CANCELLED. Note: ICTP has suspended all educational activities from 24 February as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx ICTP's annual Spring School on Superstring Theory and Related Topics provides pedagogical treatment of these subjects through lectures by some of the world's top string theorists. The activity is intended for theoretical physicists or mathematicians with knowledge of quantum field theory, general relativity and string theory. It is organized in collaboration with the Italian Institute for Nuclear Physics (INFN). LECTURERS include: Ahmed Almheiri (IAS) Horacio Casini (Centro Atomico Bariloche) Clay Córdova (University of Chicago) Douglas Stanford (Inst. Advanced Study, Princeton) Mithat Ünsal (North Carolina State University) TOPICS include: Quantum information and black holes Entanglement and quantum field theory Anomalies in quantum field theory Semiclassical dynamics and resurgence ICTP ICTP pio@ictp.it

Activity

26 Mar 2020 - 3 Apr 2020

@ ICTP

High Energy Cosmology and Astroparticle Physics

Spring School on Superstring Theory and Related Topics * CANCELLED * | (smr 3434)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Budinich Lecture Hall (LB)

Secretary: Nadia van Buuren

Organizer(s): A. Dabholkar (ICTP), E. Gava (ICTP and INFN), V. Hubeny (UC Davis), Z. Komargodski (Stony Brook & Weizman Institute), K.S. Narain (ICTP), Local Organiser: K. Papadodimas

Cosponsor(s): the Italian Institute for Nuclear Physics (INFN)infn

Support E-Mail: smr3434@ictp.it

**DEADLINE: 01/03/2020**

Europe/Rome In order to characterize low absorbing materials, where UV-vis spectrophotometry does not provide enough sensitivity, other more sensitive methods are needed. Photothermal lens technique is a very sensitive method to detect the material and to characterize it photothermally. The thermal lens technique measures the amount of heat generated followed by the absorption of light in a sample. The heat produces a temperature gradient in the medium which generates a spatial refractive index gradient called a thermal lens. The performance of this method and applications such as photocatalytical degradation of dyes as well as the photothermal characterization of plasmonic nanostructures, quantum dots and graphene are presented. ZOOM Meeting ICTP pio@ictp.it

Seminar

31 Mar 2020

@ ZOOM Meeting

Condensed Matter and Statistical Physics

Virtual Atomistic Simulation Seminar: Photothermal Lens Spectroscopy: A Highly Sensitive Technique for Characterization of Low Absorbing Materials

Speaker(s): Zeinab Ebrahimpour (ICTP Optics Lab., Trieste, Italy)

Seminar Start Time: 11:00

Europe/Rome A central tenant in the classification of phases is that boundary conditions cannot affect the bulk properties of a system. We have uncovered striking, yet puzzling, evidence of a clear violation of this assumption. We use the prototypical example of an XYZ chain with no external field in a ring geometry with an odd number of sites and both ferromagnetic and antiferromagnetic interactions. In such a setting, even at finite sizes, we are able to calculate directly the spontaneous magnetizations that are traditionally used as order parameters to characterize the system's phases. While when ferromagnetic interactions dominate, we recover the expected behavior, when the system is governed by one antiferromagnetic interaction, the magnetizations decay algebraically to zero with the system size and are not staggered, despite the AFM coupling. We term this behavior ferromagnetic mesoscopic magnetization. With two competing AFM interactions a third, new type of order can emerge, with a magnetization profile that varies in space with an incommensurate pattern. This modulation is the result of a ground state degeneracy which leads to a breaking of translational invariance. The transition between the two latter cases is signaled by an intensive discontinuity in the first derivative of the ground state energy: this is thus not a standard first-order QPT, but rather looks like a boundary QPT, in a system without boundaries (a Boundary-less Wetting Transitions), but with frustrated boundary conditions. ZOOM MEETING ICTP pio@ictp.it

Seminar

31 Mar 2020

@ ZOOM MEETING

Condensed Matter and Statistical Physics

Virtual Joint ICTP/SISSA Statistical Physics Seminar: The Frustration of Being Odd: Boundary Conditions and Bulk, Local Order

Speaker(s): Fabio FRANCHINI (Ruder Boskovic Institute, Zagreb, Croatia)

Seminar Start Time: 11:00

Europe/Rome The 2019 ICTP Prize in honour of Subrahmanyan Chandrasekhar was awarded to Dr. Basudeb Dasgupta, Tata Institute of Fundamental Research, Mumbai, India and Dr. Suvrat Raju, International Centre for Theoretical Sciences, TIFR, Shivakote, Bengaluru, India. The 2019 ICTP Prize Ceremony will take place on 1 April 2020. The prize recognises Professor Basudeb Dasgupta (India) for innovative theoretical contributions to neutrino and dark-matter physics, especially to the understanding of collective neutrino oscillations. Dasgupta pioneered the field of collective neutrino flavor evolution in extreme astrophysical environments, such as those in supernovae, which helped the understanding of these spectacular and phenomenologically rich events. The prize recognises Professor Suvrat Raju (India) for new insights into the holographic description of black-hole interiors, for clarifying the nature of subtle non-local effects in quantum gravity, and for contributions to the study of the AdS/CFT correspondence. The feature article on the 2019 ICTP Prize winners is at: https://www.ictp.it/about-ictp/media-centre/news/2019/10/ictp-prize-2019.aspx Subrahmanyan Chandrasekhar, born on 19 October 1910 in Lahore, Punjab, British India, is one of the most renowned and prolific Indian scientists. He worked on a great variety of subjects, making groundbreaking discoveries in different fields. He was awarded the Nobel Prize in Physics on 1983 for "theoretical studies of the physical processes of importance to the structure and evolution of the stars". The 2019 ICTP Prize Ceremony will take place during the Spring School on Superstring Theory and Related Topics (http://indico.ictp.it/event/9031/). All are welcome to attend. The event will be livestreamed from the ICTP website. Light refreshments will be served after the event. ICTP ICTP pio@ictp.it

Ceremony

1 Apr 2020

@ ICTP

Multidisciplinary Laboratory

2019 ICTP Prize Ceremony: POSTPONED UNTIL FURTHER NOTICE

Address: Strada Costiera 11 34152 Trieste, Italy

Room: Leonardo Building - Budinich Lecture Hall

Seminar

2 Apr 2020

@ Zoom Meeting

Strings and Higher Dimensional Theories

Matching type-B conformal anomalies

Address: Please note that the best option is that participants download the Zoom Application from the link www.zoom.us/download and join the meeting with the provided Meeting ID Join Zoom Meeting https://zoom.us/j/221740882

Room: Meeting ID: 221-740-882

Speaker(s): Vasilis NIARCHOS (Crete University)

Seminar Start Time: 14:30

Europe/Rome Protection of healthcare workforce is of paramount relevance for the care of infected and non-infected patients in the setting of a pandemic such as coronavirus disease 2019 (COVID-19). Healthcare workers are at increased risk to become infected because of contact to infected patients, infected co-workers and their community outside the hospital. The ideal organisational strategy to protect the healthcare workforce in a situation in which social distancing cannot be maintained at the workplace remains to be determined. In this study, we have mathematically modelled strategies for the employment of hospital workforce with the goal to simulate health and productivity of the workers. Therefore, deterministic models were extended to account for stochastic influences potentially occurring in rather small populations. The models were also designed to determine if desynchronization of medical teams by dichotomizing the workers may protect the workforce. Our studies model workforce productivity depending on the infection rate, the presence of reinfection and the efficiency of home office. As an application example, we apply our theory to the case of coronavirus disease 2019 (COVID-19). The results of the models reveal that a desynchronization strategy in which two medical teams work alternating for 7 days reduces the infection rate of the healthcare workforce. In case of immunity to the infectious agent this affect is mainly relevant at early stages of the pandemic. This effect is independent on infection rates and increases the overall workforce productivity under certain situations. Link: https://www.medrxiv.org/content/10.1101/2020.03.23.20041863v1.article-metrics Zoom Meeting ICTP pio@ictp.it

Seminar

3 Apr 2020

@ Zoom Meeting

Multidisciplinary Laboratory

Modelling strategies to organize healthcare workforce during pandemics: application to COVID-19

Room: Meeting ID: 475-819-702

Speaker(s): Daniel Sanchez-Taltavull, Bern University Hospital

Support E-Mail: qls@ictp.it

Please note that the best option is for participants to download the Zoom Application from the link www.zoom.us/download and join the Zoom Meeting https://zoom.us/j/475-819-702

Seminar Start Time: 14:00

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 15 May as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx Nano/mesoscale mechanical and rheological response with dissipation has become, thanks to the very broad range of experimental/theoretical approaches, a novel local diagnostic and even spectroscopic tool, as well as a playground of sophisticated non-equilibrium statistical physics. The physics of nanoscale mechanical dissipation is relevant to sliding nanofriction, to technological themes such as lubrication or finger-touchscreen friction, to soft and granular matter, to nanofrictional emulation in optical lattices, to active matter, to quantum and classical processes in noncontact AFM, and beyond. Between condensed matter physics, nanomechanics, materials science and engineering, this interdisciplinary area is of considerable conceptual value as a modern subject in non-equilibrium physics, and of the potential relevance of neighbouring fields such as fatigue, wear, lubrication, rheology, and biomechanics. As is well established in ICTP Trieste since 1995, we will collect the world community active in these fields, including groups in emerging countries, mixing theoretical, simulation and experimental highlights, and identifying future directions of motion of research in this lively arena. Topics: From dissipation to superlubricity Atomistic friction of 2D layered materials Nanomanipulation and dynamics of nano-objects at surfaces Tribology of confined systems and lubricants under shear Frictional dynamics in soft and active matter Friction in powders and granular systems Fundamentals of friction theory Electronic, magnetic and quantum friction Surface and bulk processes and transitions detected by noncontact AFM dissipation Tribochemistry, triboelectricity, biotribological effects Trends in experimental and computational techniques Participants are encouraged to submit abstracts of proposed poster contributions. A number of short oral presentation slots will be available for some of them upon selection. Speakers: A. BENASSI, Chiesi Farmaceutici, Italy R. BENNEWITZ, Leibniz Institute for New Materials, Germany X. CAO, University of Konstanz, Germany X. CHENG, University of Minnesota, USA G. DE VILHENA, University of Basel, Switzerland A. ERDEMIR, Argonne National Laboratory, USA N. ESPALLARGAS, Norwegian Univ. of Science and Technology, Norway A. GIACOMELLO, Sapienza Università di Roma, Italy E. GNECCO, University of Jena, Germany N. GOSVAMI, Indian Institute of Technology, India B. GOTSMANN, IBM Zurich Laboratories, Switzerland T. HEIMBURG, University of Copenhagen, Denmark E. KOREN, Technion, Haifa, IL Q. LI, Tsinghua University, China H. LÖWEN, University of Düsseldorf, Germany M. MA, Tsinghua University, China T. MA, Tsinghua University, China N. MANINI, University of Milan, Italy L. MARKS, Northwestern University, USA J. M. MARTIN, Ecole Centrale de Lyon, France R. PAWLAK, University of Basel, Switzerland M. ROBBINS, Johns Hopkins University, USA A. SIRIA, Ecole normale Supérieur Paris, France M. URBAKH, Tel Aviv University, Israel Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

6 Apr 2020 - 9 Apr 2020

@ ICTP

Condensed Matter and Statistical Physics

Dissipation Mechanisms in Nano/Mesoscale Tribological Systems * CANCELLED * | (smr 3435)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Budinich Lecture Hall (LB)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Ernst Meyer (University of Basel), Andrea Vanossi (CNR/IOM and SISSA), Quanshui Zheng (Tsinghua University Beijing), Local Organiser: Erio Tosatti

Cosponsor(s): Tsinghua Universitytsing, University of Baselunibas, International School for Advanced Studiessissa3, European Research Councilerc, Istituto per l’Officina dei Materialicnr-iom

Support E-Mail: smr3435@ictp.it

**DEADLINE: 15/02/2020**

Seminar

6 Apr 2020

@ Zoom Meeting

Strings and Higher Dimensional Theories

"Principal Chiral Field at Large N"

Room: Meeting ID: 776 009 834

Speaker(s): Pedro VIEIRA (SAIFR)

The discussion will be based mostly on 1911.12860 and 9403099.

Seminar Start Time: 15:00

Europe/Rome Matrix product states, and operators, are powerful tools for the description of low energy eigenstates and thermal equilibrium states of quantum many-body systems in one spatial dimension. But in out-of-equilibrium scenarios, and for high energy eigenstates of generic systems, the scaling of entanglement with time and system size makes a direct application often impossible. However, MPS and more general TNS techniques can still be used to explore some of the most interesting dynamical properties. We have recently introduced a method in which MPO techniques are combined with Chebyshev polynomial expansions to explore spectral properties of quantum many-body Hamiltonians. In particular, we show how this method can be used to probe thermalization of large spin chains without explicitly simulating their time evolution, as well as to compute full and local densities of states. (Reference: arXiv:1909.01398) ZOOM MEETING ICTP pio@ictp.it

Seminar

7 Apr 2020

@ ZOOM MEETING

Condensed Matter and Statistical Physics

Virtual Joint ICTP/SISSA Statistical Physics Seminar: Spectral Properties and Thermalization with Matrix Product Operators

Speaker(s): Mari Carmen BANULS (Max Planck Institut fuer Quantenoptik, Germany)

Seminar Start Time: 11:00

Europe/Rome Water is thought to be a major constituent of celestial bodies formed far enough from their host star for H2O to condense. The transport properties of water at extreme pT-conditions govern the evolution of water-rich planets and moons, such as the ice giants (Uranus and Neptune), or satellites possessing rigid icy shells and interior water oceans, like Europa and Enceladus. New theoretical and data-analysis methods have been recently developed to estimate accurate transport coefficients of electronically-gapped materials from ab initio equilibrium molecular dynamics and the Green-Kubo theory of linear response [1-3]. In this talk, we report on recent results on the application of these methods to heat and charge transport in water at the extreme pT-conditions occurring in the interior of water-rich planets and moons, in all the different relevant phases (partially dissociated liquid, solid, and super-ionic) [4]. These results are finally employed to build a model of the thermal evolution of Uranus, which accounts for its hitherto poorly understood very low luminosity [5]. References: [1] A. Marcolongo, P.Umari, and S. Baroni, Nature Physics 12, 80–84 (2016) [2] F. Grasselli and S. Baroni, Nature Physics 15, 967–972 (2019) [3] R. Bertossa, F. Grasselli, L. Ercole, and S. Baroni, Phys. Rev. Lett. 122, 255901 (2019) [4] F. Grasselli, L. Stixrude, S. Baroni, arXiv:2003.12557 [cond-mat.mtrl-sci] (2020) [5] L. Stixrude, S. Baroni, F. Grasselli, in preparation. ZOOM MEETING ICTP pio@ictp.it

Seminar

7 Apr 2020

@ ZOOM MEETING

Condensed Matter and Statistical Physics

Condensed Matter Seminar (Atomistic Simulation Webinar Series): Heat and Charge Transport in Water at Ice-Giant Conditions from ab initio MD Simulations

Speaker(s): Federico GRASSELLI (SISSA, Trieste)

Seminar Start Time: 11:00

Seminar

7 Apr 2020

@ ZOOM Meeting

Strings and Higher Dimensional Theories

Three Avatars of Mock Modularity

Room: Meeting ID: 221-740-882

Speaker(s): Atish DABHOLKAR (ICTP)

--- Please note change in date!! ---

Seminar Start Time: 14:30

Europe/Rome Abstract: Character variety is a variety parameterizing representations of the fundamental group of a Riemann surface, or equivalently flat connections, up to equivalence. First examples go back to Fricke and Klein and give rise to the Markov surface. I will talk about a general way to decompose a character variety into simple pieces thus connecting its geometry to interesting combinatorics. Some theorems and conjectures of Hausel, Letellier and Rodriguez-Villegas can be proved using this approach. Zoom Meeting ICTP pio@ictp.it

Seminar

9 Apr 2020

@ Zoom Meeting

Mathematics

Cell decompositions of character varieties

Address: Please note that the best option is that participants download the Zoom Application from the link http://www.zoom.us/download and join the meeting with the provided ID Join Zoom Meeting https://zoom.us/j/749-725-833

Room: Meeting ID: 749-725-833

Speaker(s): Anton Mellit (University of Vienna)

Seminar Start Time: 14:00

Europe/Rome We consider the problem of learning a coefficient vector x0 ∈ RN from noisy linear observations y=Fx0+w∈RM in the high dimensional limit M,N → ∞ with α ≡ M/N fixed. We provide a rigorous derivation of an explicit formula —first conjectured using heuristic methods from statistical physics— for the asymptotic mean squared error obtained by penalized convex regression estimators such as the LASSO or the elastic net, for a class of very generic random ma- trices corresponding to rotationally invariant data matrices with arbitrary spectrum. The proof is based on a convergence analysis of an oracle version of vector approximate message-passing (oracle-VAMP) and on the properties of its state evolution equations. Our method leverages on and highlights the link between vector approximate message-passing, Douglas-Rachford splitting and proximal descent algorithms, extending previous results obtained with i.i.d. matrices for a large class of problems. We illustrate our results on some concrete examples and show that even though they are asymptotic, our predictions agree remarkably well with numerics even for very moderate sizes. We then show how the same proof can be extended to the generalized linear model using an oracle version of generalized vector approximate message passing (oracle-GVAMP) and a more elaborate convergence proof based on Lyapunov arguments from control theory. ZOOM MEETING ICTP pio@ictp.it

Seminar

14 Apr 2020

@ ZOOM MEETING

Asymptotic errors for convex penalized linear regression beyond Gaussian matrices and extension to the generalized linear model

Address: Please note that the best option is for participants to download the Zoom Application from www.zoom.us/download and join the meeting with the Zoom Meeting ID 475-819-702 Join Zoom Meeting https://zoom.us/j/475819702

Room: Meeting ID: 475-819-702

Speaker(s): Cedric Gerbelot and Alia Abbara - Laboratoire de Physique de l’Ecole normale superieure, ENS, University PSL, CNRS, Sorbonne University, University of Paris, France

Support E-Mail: qls@ictp.it

Seminar Start Time: 14:00

Seminar

14 Apr 2020

@ ZOOM Meeting

Strings and Higher Dimensional Theories

Holomorphic anomaly in Vafa-Witten theory

Room: Meeting ID: 221-740-882

Speaker(s): Pavel PUTROV (ICTP)

Seminar Start Time: 14:30

Europe/Rome Cross-impact, namely the fact that on average buy (sell) trades on a financial instrument induce positive (negative) price changes in other correlated assets, can be measured from abundant, although noisy, market data. In this paper we propose a principled approach that allows to perform model selection for cross-impact models, showing that symmetries and consistency requirements are particularly effective in reducing the universe of possible models to a much smaller set of viable candidates, thus mitigating the effect of noise on the properties of the inferred model. We review the empirical performance of a large number of cross-impact models, comparing their strengths and weaknesses on a number of asset classes (futures, stocks, calendar spreads). Besides showing which models perform better, we argue that in presence of comparable statistical performance, which is often the case in a noisy world, it is relevant to favor models that provide ex-ante theoretical guarantees on their behavior in limit cases. From this perspective, we advocate that the empirical validation of universal properties (symmetries, invariances) should be regarded as holding a much deeper epistemological value than any measure of statistical performance on specific model instances. ZOOM MEETING ICTP pio@ictp.it

Seminar

17 Apr 2020

@ ZOOM MEETING

Quantitative Life Sciences

What really is a financial instrument? Insights from cross-impact

Room: Meeting ID: 475-819-702

Speaker(s): Iacopo Mastromatteo - Ecole Polytechnique, Palaiseau & Capital Fund Management, Paris

Support E-Mail: qls@ictp.it

Seminar Start Time: 14:00

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 15 May as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx The aim of the conference is to give young researchers from academia and industry the opportunity to gather and present their results related to high-dimensional statistical problems, as arising in machine learning, inference or statistical physics. The focus is on the analytical and rigorous technics that allow to study i) the information theoretic limits and phase transitions phenomena; ii) the algorithmic limits; and iii) the rough energy landscapes arising in these problems. Typical problems in high-dimensions include the detection and estimation of noisy signals (compressed sensing, PCA and tensor decomposition etc), the analysis of (deep) neural-networks and their learning and generalization dynamics, the detection of communities in large networks, or disordered spin systems. While these problems may seem of different natures, they actually share many similarities in their common phenomenology and the tools used to analyze them. The core of the field is made of a very active, diverse and quickly expanding community of physicists, computer scientists, mathematicians, information theorists and engineers, with the common desire to tackle increasingly challenging problems at the forefront of data science. This conference aims at reenforcing the links among this interdisciplinary community, and in particular of its youngest theory-oriented members, and to bring forward the latest development happening in the high-dimensional world. Topics: • High-dimensional probability and statistics • Theoretical machine learning • Theoretical computer science • High-dimensional inference and signal processing • Information theory • Statistical physics of disordered systems Speakers: A. AUFFINGER, Northwestern University, USA A. BANDEIRA, ETHZ, Switzerland (TBC) A. BARRA, Salento University, Italy Q. BERTHET, Google Paris, France E. BOIX, MIT, USA M. BRENNAN, MIT, USA G. BRESLER, MIT, USA L. BUDZYNSKI, ENS Paris, France Y. DESHPANDE, MIT, USA A. EL-ALAOUI, Stanford, USA M. GABRIÉ, NYU, USA S. GOLDT, ENS Paris, France A. JAGANNATH, Waterloo University, Canada M. LELARGE, INRIA, France A. LOKHOV, Los Alamos National Laboratory, USA C. LUCIBELLO, Bocconi University, Italy C. LUNEAU, EPFL, Switzerland A. MAILLARD, ENS Paris, France S. MEI, Stanford, USA E. MINGIONE, EPFL, Switzerland M. MONDELLI, IST, Austria N. MUELLER, Frankfurt University, Germany Y. POLYANSKIY, MIT, USA V. ROS, ENS Paris, France M. SAENZ, ICTP, Italy L. SAGLIETTI, ENS Paris, France L. SEGUN, Facebook Paris, France (TBC) S. SEN, Harvard, USA E. SUBAG, NYU, USA P. SUR, Harvard, USA D. TANTARI, Bologna University, Italy P. URBANI, IPHT Saclay, France Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

20 Apr 2020 - 24 Apr 2020

@ ICTP

Quantitative Life Sciences

Youth in High-dimensions: Machine Learning, High-dimensional Statistics and Inference for the New Generation * CANCELLED * | (smr 3438)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Budinich Lecture Hall (LB)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Florent Krzakala (ENS Paris, France), Jean Barbier (ICTP), Local Organiser: Matteo Marsili

Support E-Mail: smr3438@ictp.it

**DEADLINE: 01/03/2020**

Activity

20 Apr 2020 - 1 May 2020

@ ICTP

New Research Areas (High Performance Computing)

8th Workshop on Collaborative Scientific Software Development and Management of Open Source Scientific Packages * CANCELLED * | (smr 3436)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Alessandro Corbetta (Eindhoven University of Technology), David Grellscheid (ICTP), Local Organiser: Ivan Girotto

Support E-Mail: smr3436@ictp.it

**DEADLINE: 23/02/2020**

Activity

20 Apr 2020 - 1 May 2020

@ ICTP

Condensed Matter and Statistical Physics

School on Advanced Light Sources: Principles, Methods and Multidisciplinary Applications * CANCELLED * | (smr 3439)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Maya Kiskinova (Elettra Sincrotrone Trieste), Alessandro Migliori (IAEA), Ian Swainson (IAEA), Local Organiser: Nadia Binggeli

Cosponsor(s): Elettra Sincrotrone Triesteelettra, International Atomic Energy Agencyiaea3, Lightsources for Africa, the Americas and Middle East Projectlaamp

Support E-Mail: smr3439@ictp.it

Deadlines: For applications needing financial support and/or visa: 15 January 2020 For applications not needing financial support and/or visa: 01 March 2020 **DEADLINE: 01/03/2020**

Europe/Rome It is often said that perturbation theory is insufficient to understand many physical problems, and that non-perturbative effects are needed. It turns out that making this statement precise requires the mathematical framework of resurgence theory, in which perturbative series are extended to so-called trans-series, and non-perturbative effects can be detected by looking at perturbation theory at large orders. In this talk I will first review the basics of the theory of resurgence, and then present some of its recent applications to condensed matter systems. In particular, I will argue that the superconducting gap can be understood in terms of the Borel singularities of the perturbative series in the normal state, and is similar to the renormalon singularity of quantum chromodynamics. ZOOM MEETING ICTP pio@ictp.it

Seminar

21 Apr 2020

@ ZOOM MEETING

Condensed Matter and Statistical Physics

Virtual Joint ICTP/SISSA Statistical Physics Seminar: Resurgence and Non-perturbative Physics: Applications in Condensed Matter

Speaker(s): Marcos Mariño (Geneve University, Switzerland)

Seminar Start Time: 11:00

Seminar

21 Apr 2020

@ Zoom Meeting

Strings and Higher Dimensional Theories

Non-relativistic supergravity and curved supersymmetry

Room: Meeting ID: 221-740-882

Speaker(s): Jan Rosseel (Technical University of Vienna, Austria)

Seminar Start Time: 14:30

Europe/Rome The COVID-19 pandemic has highlighted the need for controlmeasures that reduce the epidemic peak ("flattening the curve"). Here we derive the optimal time-limited intervention for reducing peak epidemic prevalence in the standard Susceptible-Infectious-Recovered (SIR) model. We show that alternative, more practical interventions can perform nearly as well as the provably optimal strategy. However, none of these strategies are robust to implementation errors: mistiming the start of the intervention by even a single week can be enormously costly, for realistic epidemic parameters. Sustained control measures, though less effcient than optimal and near-optimal time-limited interventions, can be used in combination with time-limited strategies to mitigate the catastrophic risks of mistiming. ZOOM MEETING ICTP pio@ictp.it

Seminar

21 Apr 2020

@ ZOOM MEETING

Quantitative Life Sciences

Optimal, near-optimal, and robust epidemic control

Room: Meeting ID: 475-819-702

Speaker(s): Dylan H. Morris - Department of Ecology & Evolutionary Biology, Princeton University, USA

Support E-Mail: qls@ictp.it

Seminar Start Time: 15:00

Europe/Rome Allostery is a physico-chemical phenomenon that regulates protein structure, flexibility and functions by signal transmission across nanometer distances within (or between) proteins. Allosteric signal transduction is ubiquitous in biological systems and regulates essential biochemical pathways. Understanding allostery at the atomistic level is crucial for controlling protein functions, providing roadmaps for the new developments in drug discovery and enzyme engineering. In this seminar, synergistic computational and experimental biophysical investigations [1-8] are illustrated, showing how important insights into allosteric mechanisms can be achieved for relevant biological systems, including a V-type allosteric enzyme [1-4, 7], a DNA-nuclear receptor complex [5] and the genoma-editing CRISPR-Cas9 [6] and spliceosome [8] systems. In particular, community analysis of dynamical protein networks [1], see Figure 1, based on mutual information of correlated protein motions determined from classical molecular dynamics simulations will be described. References [1] I. Rivalta, M. M. Sultan, N.-S. Lee, G. A. Manley, J. P. Loria, and V. S. Batista, Proc. Natl. Acad. Sci. U.S.A. 2012, 109, E1428. [2] G. A. Manley, I. Rivalta and J. P. Loria, J. Phys. Chem. B. 2013, 117, 3063. [3] G. P. Lisi, G. A. Manley, H. Hendrickson, I. Rivalta, V. S. Batista, and J. P. Loria, Structure 2016, 24, 1155. [4] I. Rivalta, G. P. Lisi, N.-S. Snoeberger, G. A. Manley, J. P. Loria, and V. S. Batista, Biochemistry 2016, 55, 6484. [5] C. G. Ricci, R. L. Silveira, I. Rivalta, V. S. Batista and M. S. Skaf, Sci Rep. 2016, 6,19940. [6] G. Palermo, C. G. Ricci, A. Fernando, R. Basak, M. Jinek, I. Rivalta, V. S. Batista and J. A. McCammon, J. Am. Chem. Soc. 2017, 139 ,16028 [7] A. Gheeraert, L. Pacini, V. S. Batista, L. Vuillon, C. Lesieur and I. Rivalta J. Phys. Chem. B 2019, 123, 16, 3452 [8] A. Saltalamacchia, L. Casalino, J. Borišek, V. S. Batista, I. Rivalta and A. Magistrato J. Am. Chem. Soc. 2020, just accepted DOI: 10.1021/jacs.0c02036 Jitsi Platform Webinar ICTP pio@ictp.it

Seminar

22 Apr 2020

@ Jitsi Platform Webinar

Condensed Matter and Statistical Physics

Condensed Matter Seminar (Atomistic Simulation Webinar Series): Network Analysis of Chemical Signal Propagation in Proteins

Address: <a href="https://edu.meet.garr.it/ictp_atomistic_cmsp_2020">https://edu.meet.garr.it/ictp_atomistic_cmsp_2020</a>

Speaker(s): Ivan Rivalta (Universita' di Bologna, Dipt. di Chimica Industriale 'Toso Montanari', Bologna)

Seminar Start Time: 11:00

Europe/Rome Abstract: Phase transitions happen in complex systems, systems made of very many interacting entities, and correspond to a change of macroscopic state of the system when some external control parameter is tuned. The classical example are molecules of water globally changing from ice to liquid to vapour (to plasma) as temperature increases. But in the past 50 years it has been realised that phase transitions are much more «universal», in the sense that they also happen in systems that may a priori be considered far from the realm of condensed matter physics: neurosciences, biological systems, financial markets, but also in more abstract «Information processing systems»: computer science and algorithms for combinatorial optimisation, machine learning from data, or inference of large signals hidden in noise. «No way… Yes way!» Zoom Meeting ICTP pio@ictp.it

Seminar

23 Apr 2020

@ Zoom Meeting

Mathematics

BASIC NOTIONS SEMINAR: Phase transitions: from physics to computer science

Address: After registration, you will receive a confirmation email containing information about joining the meeting.

Room: <a href="https://zoom.us/meeting/register/tJcrcuurrTwrGt16s9nn0erFUBap8n3GJh3U">https://zoom.us/meeting/register/tJcrcuurrTwrGt16s9nn0erFUBap8n3GJh3U</a>

Speaker(s): Jean Barbier (ICTP)

Pre-registration required

Seminar Start Time: 16:00

Europe/Rome After completing an MSc from Scuola Normale Superiore and a PhD in theoretical particle physics from SISSA, Dr Ferretti moved to Barcelona, Cologne and Paris to focus on population genomics. In 2015, he moved to the Pirbright Institute (UK) to study dynamics of pathogens and viral-host interactions. Ferretti's current research at the Big Data Institute in Oxford involves an interplay of epidemiology, genetics, evolution and within-host dynamics of HIV and other viral pathogens such as FMDV and ASF. Abstract: There is an ongoing public debate about mobile apps for contact tracing. Their implications in terms of privacy and data security are under intense scrutiny by cybersecurity experts, lawyers and politicians, as well as the general public. Unfortunately, the most important questions are often absent from this debate: what is the epidemiological rationale behind the suggestion to deploy such a risky tool? Which role would these apps play in the control of the COVID-19 epidemic, and why are they so relevant? In this talk, I will present the scientific arguments underpinning the answers. I will summarise our understanding of COVID-19 epidemiology and SARS-CoV-2 transmission and I will discuss the challenges of different containment strategies for this epidemic. In this framework, I will highlight how speed and efficiency are the main determinants of the effectiveness of contact tracing in controlling the epidemic, and why digital solutions are the most promising ones. I will also discuss current limitations and challenges of app-based approaches. The talk (approx. 30 minutes) will be in a webinar format, with an introduction by the Director. A question/answer session will then be moderated by Prof. Matteo Marsili from the QLS Section. PLEASE REGISTER AHEAD AT THE FOLLOWING: https://zoom.us/webinar/register/WN_hVd-EXGkSMeZIhp0nzwTjQ After registering, you will receive a confirmation email containing information about joining the webinar. The recorded version of the talk is available on the ICTP YouTube Channel at: https://www.youtube.com/watch?v=xXcE-FO-1Nc Zoom Meeting ICTP pio@ictp.it

Colloquium

24 Apr 2020

@ Zoom Meeting

Joint ICTP-SISSA Colloquium by Prof. Luca Ferretti on "Epidemic control of COVID-19 through instantaneous contact tracing: the case for a mobile app-based solution"

Address: Zoom Meeting

Room: Pre-registration: https://zoom.us/webinar/register/WN_hVd-EXGkSMeZIhp0nzwTjQ

Speaker(s): Prof. Luca Ferretti, Big Data Institute, Oxford University, UK

Colloquium Start Time: 14:00

Seminar

28 Apr 2020

@ ZOOM Meeting

Strings and Higher Dimensional Theories

Hexagon Scattering Amplitude at the Origin

Room: Meeting ID: 221-740-882

Speaker(s): Lance J. Dixon (SLAC, USA)

Seminar Start Time: 16:00

Europe/Rome Extracellular vesicles (EVs) are small vesicles ensuring transport of molecules between cells and throughout the body. Their small size and biological and physical functions make them optimal candidates as therapeutic agents in several medical frameworks. The elucidation of biophysical and biochemical characteristics of EVs is crucial for the understanding of their interaction with recipient cells and their functional activity. In particular, for therapeutic applications understanding how the process of manufacturing affects the biological function of EVs is mandatory before going to the clinical testing. The absence of standardized methodologies and technologies to establish reliable criteria has been the main hurdle for real therapeutic applications of EVs. Here we exploited a combination of different biophysical techniques (Fourier Transform Infrared Spectroscopy, Ultraviolet Resonant Raman Spectroscopy, Atomic Force Microscopy and Small Angle X-Ray Scattering) to screen EVs derived from umbilical cord-mesenchymal stem cells with different isolation procedures, evidencing subtle differences in the biophysical properties of EVs. Moreover we tested their interaction with artificial model membranes to verify their functional uptake properties by means of a combination of AFM, Neutron Reflectometry and Small Angle Neutron Scattering. The results underline the need of a multiparametric analysis to address size, stability and purity of different preparations and to correlate phenotypic parameters of EVs with their functional activity. ZOOM Meeting ICTP pio@ictp.it

Seminar

29 Apr 2020

@ ZOOM Meeting

Condensed Matter and Statistical Physics

CMSP Seminar (Atomistic Simulation Webinar Series): Multi-technique Analysis of Extracellular Vesicles: Not only size matters

Speaker(s): Pietro Parisse (NanoInnovation Laboratory, Elettra, Trieste, Italy)

Seminar Start Time: 11:00

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 15 May as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx Cosmic Ray Neutron Sensor (CRNS) has potential for soil moisture monitoring of agricultural land. The results can be used for irrigation scheduling and extreme weather event forecasting. Remote sensing can extrapolate the acquired soil moisture data to larger areas. The increasing demand for food production due to population increase and climatic hazards requires improving land management practices. One of major demands is to support the decision processes by reliable and representative information on soil moisture, which is difficult to obtain by conventional soil moisture measurements. CRNS is a much more suitable technique for this purpose since it is non-invasive and has a large footprint overcoming the problem of soil moisture spatial microvariability. The data acquired from CRNS measurements can be used for scientific tasks such as validation of hydrological models and remote sensing soil moisture products, as well as for practical land management and environmental applications such as soil moisture management under rainfed agriculture, irrigation scheduling, drought management and flood forecast. Topics: Basic principles of soil moisture measurements using Cosmic Ray Neutron Sensor (CRNS) Methodological challenges: footprint extension, heterogeneity mapping, root depth moisture interpolation, biomass impact Hydrological models as a tool used for land management Use of remote sensing and soil moisture products for land management Use of CRNS data for hydrological modeling Use of CRNS data for validation of remote sensing soil moisture products Use of CRNS data for rainfed agriculture Use of CRNS data for irrigation scheduling Use of CRNS data for drought management Use of CRNS data for flood forecast Speakers: B. BAUER-MARSCHALLINGER, TU Wien, Austria T. FRANZ, University of Nebraska-Lincoln, USA W. WOLFGANG, TU Wien, Austria The applicants should have background in agricultural sciences, earths sciences or physics and the experience in research activities at the field of soil water management and use of Cosmic Ray Neutron Sensor (CRNS). The applicants from institutions having already own CRNS and running CRNS measurements at stationary monitoring sites will be preferred. Experience with remote sensing is also welcomed, but not mandatory. ICTP ICTP pio@ictp.it

Activity

4 May 2020 - 8 May 2020

@ ICTP

Earth System Physics

Joint ICTP-IAEA Workshop on the Use of Cosmic Ray Neutron Sensor for Soil Moisture Management and Validation of Remote Sensing Soil Moisture Maps * CANCELLED * | (smr 3440)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Euler Lecture Hall (LB)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Emil Fulajtar (Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Soil and Water Management & Crop Nutrition Subprogramme), Local Organiser: Paolo Creminelli

Cosponsor(s): International Atomic Energy Agency (IAEA)iaea3

Support E-Mail: smr3440@ictp.it

**DEADLINE: 31/01/2020**

Europe/Rome For more detailed information please visit: https://tinyurl.com/y97en56t Program: 14:00 hrs Michael Knap (TU Munich) Anomalous Diffusion in Dipole Conserving Systems 14:30 hrs Alessandro Silva (SISSA Trieste) Dynamics and Scrambling in Systems with Long Range Interactions 15:00 hrs Guided Discussions in Breakout Rooms How -to By default, all microphones of participants are muted when joining the online seminar. You can unmute yourself whenever you would like to start a communication, e.g., when asking a question. Please mute again once the communication has ended in order to reduce background noise for all participants. Please feel free to ask questions during the online sessions as you're used to in conventional talks. Discussion Time: For this event, PhD students will have the option to join the speakers of the session into a discussion room. PhD students will receive a respective offer to join this 'breakout room' after the end of the session. If you're a PhD student and have not been offered this option, just contact the host via the chat. All others are invited to use separate breakout rooms, where guided discussions will take place. We will host experts in the field to host the discussions and provide additional information during the seminars. The Organizers: Marcello Dalmonte (ICTP Trieste) and Markus Heyl (MPI-PKS Dresden) ZOOM Meeting ICTP pio@ictp.it

Seminar

4 May 2020

@ ZOOM Meeting

Condensed Matter and Statistical Physics

CMSP Joint Virtual MPIPKS/ICTP Seminar

Address: Join at: https://meet.gwdg.de/b/mar-kq4-kxj It is recommended to use Chromium/Chrome for optimal functionality.

Room: BigBlueButton

Speaker(s): Michael KNAP (TU Munich) and Alessandro SILVA (SISSA Trieste)

Seminar Start Time: 14:00

Europe/Rome The most appropriate way of studying microscopic systems is by following a purely quantum mechanical approach. If for the dynamics of electrons it is not recommended to follow a classical description, the dynamics of nuclei (ions) which are a few order of magnitude heavier can often be described with enough accuracy classically: the quantum effect can then be recovered using approximate approach inspired from the Feynman Path integral description of quantum mechanics. Ideally, one would want to treat the dynamics of the nuclei quantum mechanically by solving the Schrödinger equation. Unfortunately, this treatment suffers from what is known as the ‘curse of dimensionality’ which is the exponential increase in complexity of the problem with its size: an issue that currently limits the full quantum mechanical treatment of microscopic system with standard procedures to molecules with 4 to 5 atoms. In the early 90s, among various efforts to overcome those limitations, the multiconfiguration time dependent Hartree1 (MCTDH) approach was introduced by the theoretical chemistry group in Heidelberg. This method with many improvements that happened throughout the years made it possible to treat some biological molecules2 (with up to 256 degrees of freedom) quantum mechanically and opened the possibility of a fully quantum mechanical study of condensed phase systems. In this talk we will present the MCTDH method by focusing on some of its core equations, its benefits and its limitations. We will also describe some of the recent advances which allow to study efficiently more complicated molecular systems. Then we will discuss some recent projects of interest where an extensive use of the MCTDH was made. Those will range from the calculation of absorption cross-sections of ozone in order to understand the ozone isotopic anomaly3 (which is of interest in atmospheric chemistry) to the calculations of the infrared spectrum of water clusters or the scattering of water on a nickel surface. We will conclude by discussing some perspectives of the usage of the MCTDH approach in condensed phase physics. Key-words: quantum dynamics, tensor contraction, MCTDH. 1. M.H. Beck et al., Phys. Rep. 324, 1 (2000). 2. D. Mandive-Tapia et al., J. Phys. Chem. B. 122, 126 (2018). 3. S. Ndengué et al., J. Geophys. Res. Atm. 119:7, 4286 (2014). ZOOM Meeting ICTP pio@ictp.it

Seminar

6 May 2020

@ ZOOM Meeting

Condensed Matter and Statistical Physics

CMSP Seminar (Atomistic Simulation Webinar Series): The Multiconfiguration Time Dependent Hartree (MCTDH) Approach and Applications in Gas Phase and Condensed Phase Chemistry

Speaker(s): Steve Ndengue (East African Institute for Fundamental Research (EAIFR), Kigali, Rwanda)

Seminar Start Time: 11:00

Europe/Rome Abstract The data science revolution is finally enabling the development of large-scale data-driven models that provide real- or near-real-time forecasts and risk analysis for infectious disease threats. These models also provide rationales and quantitative analysis to support policy making decisions and intervention plans. At the same time, the non-incremental advance of the field presents a broad range challenges: algorithmic (multiscale constitutive equations, scalability, parallelization), real time integration of novel digital data stream (social networks, participatory platform, human mobility etc.). I will review and discuss recent results and challenges in the area, and focus on ongoing work aimed at responding to the COVID-19 pandemic. Biosketch: Alex Vespignani is the Director of the Network Science Institute and Sternberg Family Distinguished University Professor with interdisciplinary appointments in the College of Computer and Information Science, College of Science and the Bouvé College of Health Sciences, Northeastern University, USA. His research interests include complex systems and networks, and the data-driven computational modeling of epidemics. The talk (approx. 30 minutes) will be in a webinar format, with an introduction by the Director, ICTP and the Director, SISSA. A question/answer session will follow. PLEASE REGISTER AHEAD FOR THIS WEBINAR AT THE FOLLOWING: https://zoom.us/webinar/register/WN_2ASi40FqQCKjDBKrYAEN_w After registering, you will receive a confirmation email containing information about joining the webinar. The recorded version of this talk is now available on ICTP's YouTube Channel at: https://www.youtube.com/watch?v=chgW1Kg-GsE Zoom ICTP pio@ictp.it

Colloquium

6 May 2020

@ Zoom

Joint ICTP-SISSA Colloquium by Prof. Alessandro Vespignani on "Computational Epidemiology at the time of COVID-19"

Address: c/o ICTP

Room: Zoom meeting. Pre-registration required: details below

Speaker(s): Dr. Alessandro Vespignani, NETsi, Northeastern University, USA

Colloquium Start Time: 15:00

Europe/Rome In my talk I will discuss a weak ergodicity breaking relevant for the experimentally realized Rydberg-atom quantum simulator [1]. I will concentrate on the variational description of unusual quantum many-body revivals that originate from the small set of special non-thermal eigenstates. I will relate this dynamics to presence of stable periodic trajectories within time-dependent variational principle (TDVP) description of dynamics [2]. I will use TDVP to find new "scars" and explore their response to perturbations of the Hamiltonian in one and two spatial dimensions. For two dimensional systems I will introduce the synchronization mechanism that helps stabilizing quantum revivals and mitigates boundary effects [3]. Finally, I will discuss a new opportunities for the creation of novel states with long-lived coherence in systems that are now experimentally realizable [1]. [1] H. Bernien, et al., Nature 551, 579–584 (2017) [2] A. A. Michailidis, C. J. Turner, Z. Papić, D. A. Abanin, M. Serbyn, Phys. Rev. X 10, 011055 (2020) [3] A. A. Michailidis, C. J. Turner, Z. Papić, D. A. Abanin, M. Serbyn, arXiv:2003.02825 Zoom Meeting ICTP pio@ictp.it

Seminar

7 May 2020

@ Zoom Meeting

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Condensed Matter): Quantum many-body scars, mixed phase spaces and non-universal thermalization.

Speaker(s): Maksym Serbyn (IST, Austria)

Seminar Start Time: 11:30

Seminar

8 May 2020

@ ZOOM MEETING

Quantitative Life Sciences

Population Dynamics of Emerging Diseases

Room: Meeting ID: 475-819-702

Speaker(s): Andrew P. Dobson (Ecology & Evolutionary Biology, Princeton University)

Support E-Mail: qls@ictp.it

Seminar Start Time: 15:00

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 15 May as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx The deadline has been extended to: 28 January 2020 This two-week workshop provides early-stage career researchers with a quantitative understanding of the impact of radiation damage on materials for existing fission and proposed fusion reactors. The emphasis is on the conceptual progression of theoretical and experimental techniques across spatial and time scales from atomistic descriptions to the macroscopic behaviour of bulk material. Topics: • Irradiated material: defect production and damage metrics • Dose-rate, damage energies, atomic displacement • Neutron-induced defects: transmutation, activation, depletion • Nuclear kinematics • Primary damage and beyond: cascades, voids, swelling • Correlation and prediction of material behaviour under irradiation • Paradigms for irradiation testing • Ion irradiation as a proxy for neutrons • Multiscale modelling of defects in nuclear materials • Evolution of surfaces under irradiation • The effect of neutron and surrogate radiation on the properties of fusion-relevant materials • Prospects for high-entropy alloys in nuclear materials applications • Hydrogen isotope deposition, trapping and permeation Further information about the Radiation Damage in Nuclear Systems: from Bohr to Young, can be found on the Atomic and Molecular Data Unit website at the following link: https://www-amdis.org/workshops/ictp-2020 Lecturers: Sergei Dudarev, UK Atomic Energy Authority, UK Yves Ferro, Aix-Marseille Université (AMU), France Mark Gilbert, UK Atomic Energy Authority, UK Wim Haeck, Los Alamos National Laboratory, USA Wolfgang Jacob, IPP-Garching, Germany Juan Knaster, Fusion for Energy, European Union Alexander Knowles, University of Birmingham, UK Sergio Lozano-Perez, University of Oxford, UK Lorenzo Malerba, CIEMAT, Spain Sabina Markelj, Jožef Stefan Institute, Slovenia Jaime Marian, University of California, USA Dmitry Matveev, Forschungszentrum Jülich (FZJ), Germany Kai Nordlund, University of Helsinki, Finland Jeremy Pencer, Canadian Nuclear Laboratories, Canada Thomas Schwarz-Selinger, IPP-Garching, Germany Marta Serrano, CIEMAT, Spain Jean-Christophe Sublet, IAEA Udo von Toussaint, IPP-Garching, Germany Gary Was, University of Michigan, USA Steven Zinkle, University of Tennessee, USA Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

11 May 2020 - 22 May 2020

@ ICTP

Joint ICTP-IAEA Workshop on Radiation Damage in Nuclear Systems: from Bohr to Young * CANCELLED * | (smr 3443)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Celine Cabet (CEA, France), Kalle Heinola (IAEA), Christian Hill (IAEA), Wolfgang Jacob (Max Planck Institute for Plasma Physics, Garching, Germany), Sabina Markelj (Jožef Stefan Institute, Ljubljana, Slovenia), Jean-Christophe Sublet (IAEA), Gary Was (University of Michigan, USA), Steven Zinkle (University of Tennessee, USA), Local Organiser: Nicola Seriani

Cosponsor(s): International Atomic Energy Agencyiaea3

Support E-Mail: smr3443@ictp.it

**DEADLINE: 28/01/2020**

Activity

11 May 2020 - 22 May 2020

@ ICTP

High Energy Cosmology and Astroparticle Physics

Summer School on Cosmology 2020 * CANCELLED * | (smr 3467)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Budinich Lecture Hall (LB)

Secretary: Nadia van Buuren

Organizer(s): Paolo Creminelli (ICTP), Ravi Sheth (UPenn), Local Organiser: Mehrdad Mirbabayi

Cosponsor(s): the Italian Institute for Nuclear Physics (INFN)infn

Support E-Mail: smr3467@ictp.it

**DEADLINE: 01/03/2020**

Activity

11 May 2020 - 16 May 2020

@ ICTP

Earth System Physics

10th ICTP Workshop on the Theory and Use of Regional Climate Models * CANCELLED * | (smr 3441)

Address: via Grignano, 9I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Erika Coppola (ICTP), Xuejie Gao (IAP, Beijing, China), Gemma Narisma (Ateneo de Manila, Philippines), Michelle Reboita (U. Federal de Itajuba, Brazil), Local Organiser: Filippo Giorgi

Support E-Mail: smr3441@ictp.it

Europe/Rome Path integrals are a central tool when it comes to describing quantum or thermal fluctuations of particles or fields. Their success dates back to Feynman who showed how to use them within the framework of quantum mechanics. Since then, path integrals have pervaded all areas of physics where fluctuation effects, quantum and/or thermal, are of paramount importance. Their appeal is based on the fact that one converts a problem formulated in terms of operators into one of sampling classical paths with a given weight. Many different definitions are used to define path-integral weight. In statistical mechanics, time-discretization is the standard approach; it implies that, unlike conventional integrals, path integration suffers a serious drawback: in general, one cannot make non-linear changes of variables without committing an error of some sort. In such approach, no path-integral based calculus is possible. We explain which are the mathematical reasons causing this important caveat, and we come up with cures for systems described by one degree of freedom. Our main result is a construction of path integration free of this problem, through a direct time-discretization procedure. We also compare our time-discretized approach to other definitions of path-integral weights that were used in field theories of quantum problems. ZOOM MEETING ICTP pio@ictp.it

Seminar

12 May 2020

@ ZOOM MEETING

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Statistical Physics): Building a Path-integral Calculus: A Covariant Discretization Approach

Speaker(s): Viviene Lecomte (Laboratoire Interdisciplinaire de Physique, Universitè Grenoble-Alpes)

Seminar Start Time: 11:00

Europe/Rome A biosketch and abstract will be defined in due course. The talk will take place on 12 May 2020 at 16.00 in the Euler Lecture Hall @ ICTP. Light refreshments will be provided. All are welcome to attend. ICTP ICTP pio@ictp.it

Colloquium

12 May 2020

@ ICTP

ICTP CMSP Colloquium by Prof. Juan Knaster: POSTPONED UNTIL FURTHER NOTICE

Address: Strada Costiera 11 34141 Trieste, Italy

Room: Leonardo Building - Euler Lecture Hall

Speaker(s): Prof. Juan Knaster, Deputy Director, ITER Programme and former head of the IFMIF/EVEDA facility

Colloquium Start Time: 16:00

Europe/Rome Quantum nuclear effects plays a central role in determining properties of systems that contain light nuclei. For instance, the large deviation of the heat capacity of a solid from the Delong’s Petit limit and of the particle momentum distribution from the Maxwell-Boltzmann behaviour are direct manifestations of the quantum nature of nuclei. While these effects can be accurately modelled in atomistic simulations by employing the imaginary time path integral (PI) technique [1], the high computational cost of running PI simulations has prevented their widespread use. In this talk, I will introduce molecular dynamics based methods [2, 3, 4, 5] that substantially reduce the computational cost of PI simulations and their implementation in an open source software i-PI. [6] Going beyond benchmarks, I will demonstrate the relevance of these advances by studying different properties and classes of materials – such as the proton momentum distribution in water that relates to the local structure of protons in ice [4] and facilitates interpretation of complex Deep Inelastic Neutron scattering experiments, quantum effects that facilitate isotope separation in porous organic cages [7], tuning of thermal properties of metal-organic cages loaded with greenhouse gases [5], and quantitative estimation of quantum mechanical effects that stabilize pharmaceutically active molecular crystals [8] – at a fraction of the computational cost if using conventional techniques. References [1] David Chandler and Peter G. Wolynes. Exploiting the isomorphism between quantum theory and classical statistical mechanics of polyatomic fluids. The Journal of Chemical Physics, 74(7):4078– 4095, April 1981. [2] V. Kapil, J. VandeVondele, and M. Ceriotti. Accurate molecular dynamics and nuclear quantum effects at low cost by multiple steps in real and imaginary time: Using density functional theory to accelerate wavefunction methods. The Journal of Chemical Physics, 144(5):054111, February 2016. [3] Venkat Kapil, J ̈org Behler, and Michele Ceriotti. High order path integrals made easy. The Journal of Chemical Physics, 145(23):234103, December 2016. [4] Venkat Kapil, Alice Cuzzocrea, and Michele Ceriotti. Anisotropy of the Proton Momentum Distribution in Water. The Journal of Physical Chemistry B, 122(22):6048–6054, June 2018. [5] Venkat Kapil, Jelle Wieme, Steven Vandenbrande, Aran Lamaire, Veronique Van Speybroeck, and Michele Ceriotti. Modeling the Structural and Thermal Properties of Loaded Metal–Organic Frameworks. An Interplay of Quantum and Anharmonic Fluctuations. Journal of Chemical Theory and Computation, 15(5):3237–3249, May 2019. [6] Venkat Kapil, Mariana Rossi, Ondrej Marsalek, Riccardo Petraglia, Yair Litman, Thomas Spura, Bingqing Cheng, Alice Cuzzocrea, Robert H. Meißner, David M. Wilkins, Benjamin A. Hel- frecht, Przemysl􏰀aw Juda, S ́ebastien P. Bienvenue, Wei Fang, Jan Kessler, Igor Poltavsky, Steven Vandenbrande, Jelle Wieme, Clemence Corminboeuf, Thomas D. Ku ̈hne, David E. Manolopou- los, Thomas E. Markland, Jeremy O. Richardson, Alexandre Tkatchenko, Gareth A. Tribello, Veronique Van Speybroeck, and Michele Ceriotti. i-PI 2.0: A universal force engine for advanced molecular simulations. Computer Physics Communications, 236:214–223, March 2019. [7] Ming Liu, Linda Zhang, Marc A. Little, Venkat Kapil, Michele Ceriotti, Siyuan Yang, Lifeng Ding, Daniel L. Holden, Rafael Balderas-Xicoht ́encatl, Donglin He, Rob Clowes, Samantha Y. Chong, Gisela Schu ̈tz, Linjiang Chen, Michael Hirscher, and Andrew I. Cooper. Barely porous organic cages for hydrogen isotope separation. Science, 366(6465):613–620, November 2019. [8] Venkat Kapil, Edgar Engel, Mariana Rossi, and Michele Ceriotti. Assessment of Approxi- mate Methods for Anharmonic Free Energies. Journal of Chemical Theory and Computation, 15(11):5845–5857, November 2019. ZOOM Meeting ICTP pio@ictp.it

Seminar

13 May 2020

@ ZOOM Meeting

Condensed Matter and Statistical Physics

CMSP Seminar (Atomistic Simulation Webinar Series): Nuclear Quantum Effects - Fast and Accurate

Speaker(s): Venkat Kapil (Laboratory of Computational Science and Modeling Ecole Polytechnique Federale de Lausanne)

Seminar Start Time: 11:00

Europe/Rome Prof. Shivaji Sondhi is professor of physics at Princeton University, USA. His research has focused on materials in which the interactions among the electrons are important, even for a qualitative understanding of their behavior. This is in contrast to the textbook examples of metals and insulators, whose behavior is largely explicable in terms of independent electrons.The particular systems he has worked on are the two-dimensional electron gases that are realized in semiconductor heterostructures, superconducting fullerides, frustrated magnetic systems and the cuprate superconductors. Current interests include: "Quantum Hall" systems and searching for possible new phases in the quantum Hall regime, and the more theoretical question of constructing "better" field theories of the high-field dynamics; as well as continuous quantum phase transitions. Abstract: A population can be immune to epidemics even if not all of its individual members are immune to the disease, just as long as sufficiently many are immune -- this is the traditional notion of herd immunity. In the smartphone era a population can be immune to epidemics even if not a single one of its members is immune to the disease -- a notion we propose to call "digital herd immunity", which is similarly an emergent characteristic of the population. This immunity arises because contact-tracing protocols based on smartphone capabilities can lead to highly efficient quarantining of infected population members and thus the extinguishing of nascent epidemics. When the disease characteristics are favorable and smartphone usage is high enough, the population is in this immune phase. As usage decreases there is a novel "contact tracing" phase transition to an epidemic phase. We present and study a simple branching-process model for COVID-19 and show that digital immunity is possible regardless of the proportion of non-symptomatic transmission. We believe this is a promising strategy for dealing with COVID-19 in many countries. The talk (approx. 40 minutes) will be in a webinar format, with an introduction by the Director. A question/answer session will follow. PLEASE REGISTER AHEAD FOR THIS WEBINAR AT THE FOLLOWING: https://zoom.us/webinar/register/WN_HPsW1arNSxKdLvHs8p7Uzg After registering, you will receive a confirmation email containing information about joining the webinar. Zoom meeting ICTP pio@ictp.it

Colloquium

13 May 2020

@ Zoom meeting

Joint ICTP-SISSA Colloquium by Professor Shivaji Sondhi on "Digital Herd Immunity and Covid-19"

Room: Zoom webinar. Pre-registration required.

Speaker(s): Professor Shivaji Sondhi, Princeton University, USA

Colloquium Start Time: 16:00

Europe/Rome PLEASE NOTE: DUE TO THE CURRENT ONGOING COVID-19 SITUATION, THIS ACTIVITY IS TEMPORARILY POSTPONED TO A FUTURE DATE The School is organized in collaboration with the Simon Bolivar University. Directors: I. Girotto (ICTP, Trieste, Italy) A. Kohlmeyer (ICTP, Trieste, Italy & Temple University, Philadelphia, US) L. Paheco (Simon Bolivar University) J.Y. Reyes (Simon Bolivar University) P.A. Sepulveda (Simon Bolivar University) ICTP Scientific contact: I. Girotto (ICTP, Trieste, Italy) The School has the goal of teaching participating scientists about modern computer hardware and programming to provide a foundation for future computational research using HPC, through an intensive programme with focus on practical skills. School participants will learn to improve the efficiency of their research codes, and to parallelize them. Lectures on a selection of technical aspects of modern HPC hardware will be mixed with introductions to widely used parallel programming tools and libraries. The hands-on sessions will allow participants to practice on small example problems of general scientific interest. Example topics will cover numerical methods and parallel strategies, as well as data management. The programme specifically addresses the needs of scientists using, writing, or modifying HPC applications. It will be mainly based on fundamental HPC- relevant features in widely used scientific software for high-performance computing: • Computer architectures for HPC and how to optimize for them • Parallel programming tools (MPI & OpenMP) • Parallel programming best pactices • High-performance libraries for the solution of common math problems • Floating-point math.. Speakers: I. Girotto (ICTP, Trieste, Italy) A. Kohlmeyer (ICTP, Trieste, Italy & Temple University, Philadelphia, US) F. Posada (ICTP, Trieste, Italy & Temple University Philadelphia, US) M. Brenes (Trinity College, Dublin, Ireland ) J. Aguilar Mena (Barcelona Supercomputing Center, Barcelona, Spain) Grants: A limited number of grants are available to support the attendance of selected participants from developing countries, with priority given to young scientists from Latin America. Accommodation and meals are covered for all participants coming from outside Baranquilla. There is no registration fee. Baranquilla - Colombia ICTP pio@ictp.it

Activity

18 May 2020 - 29 May 2020

@ Baranquilla - Colombia

New Research Areas (High Performance Computing)

3rd Latin American Introductory School on Parallel Programming and Parallel Architecture for High Performance Computing * POSTPONED * | (smr 3444)

Secretary: Doreen Sauleek

Organizer(s): A. Kohlmeyer (Temple University, Philadelphia, U.S.A.), L. Pacheco (Simon Bolivar University), J.Y. Reyes (Simon Bolivar University), P.A. Sepulveda (Simon Bolivar University), ICTP Scientific Contact: I. Girotto

Cosponsor(s): Euro EXAeuroexa, Universidad Simón Bolívarusb, Macondo Lab Universidad Simón Bolivarmacondo

**ACTIVITY TEMPORARILY POSTPONED TO A FUTURE DATE** **DEADLINE: 22/02/2020**

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 15 May as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx <span lang="EN-US" style="font-size:10.0pt;font-family:DejaVuSerif; mso-fareast-font-family:"MS Mincho";mso-fareast-theme-font:minor-fareast; mso-bidi-font-family:DejaVuSerif;mso-ansi-language:EN-US;mso-fareast-language: EN-US;mso-bidi-language:AR-SA"> Modern superconducting materials of interest tend to exhibit a complex interplay of many-body ordering tendencies. This requires an understanding of the ensuing multicomponent field theories, their microscopic origins and macroscopic responses. This program will bring together experimentalists, experts working on macroscopic properties and experts working on the underlying microscopic physics that leads to these complex states. The goal will be to achieve an in depth understanding of important physical properties including magnetic response, transport and thermoelectric properties, nature of topological excitations, and fluctuation-induced phases. This will be achieved through an emphasis on the following material systems: twisted bilayer graphene; iron-based superconductors; unconventional superconductivity in Sr2RuO4; UTe2 and related ferromagnetic superconductors; Bi2Se3 based nematic superconductors; j=3/2 superconductors; and novel 2D superconductors Topics: Topological superconducting phases Broken time-reversal superconductors Superconductivity with competing orders Topological Majorana edge states Novel superconducting gap structures Superconductivity from correlated electrons Speakers: A. BERNEVIG, Princeton University A. BLACK-SCHAFFER, Uppsala University G. BLUMBERG, Rutgers University J.-P. BRISON, CEA N. BUTCH, University of Maryland J. CARLSTROM, Stockholm University A. CAVALLERI, MPSD A. CHUBUKOV, University of Minnesota D. EFETOV, ICFO Y. FENG, Chinese Academy of Sciences V. GRINENKO, IFW-Dresden E. HASSINGER, MPI Dresden C. HICKS, MPI Dresden J. KANG, Soochow University A. KAPITULNIK, Stanford University H.-H. KLAUSS, TU Dresden R. LORTZ, HKUST A. MACKENZIE, MPI Dresden V. MADHAVAN, UIUC E.-G. MOON, KAIST M. OSHIKAWA, University of Tokyo A. PASUPATHY, Columbia University S. RAGHU, Stanford University A. RAMIRES, ICTP-SAIFR A. SAMOILENKA, KTH M. SIGRIST, ETH Zurich M. SILAEV, University of Jyväskylä C. TIMM, TU Dresden C. VARMA, University of California Y. YANASE, Kyoto University S. YIP, Academia Sinica Taipei ICTP ICTP pio@ictp.it

Activity

18 May 2020 - 22 May 2020

@ ICTP

Condensed Matter and Statistical Physics

Superconductivity: from Microscopic Mechanisms to Topology to Macroscopic Properties * CANCELLED *| (smr 3445)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Egor Babaev (KTH The Royal Institute of Technology), Daniel Agterberg (University of Wisconsin), Oskar Vafek (University of Florida), Local Organiser: Marcello Dalmonte

Support E-Mail: smr3445@ictp.it

**DEADLINE: 01/03/2020**

Europe/Rome Brownian motion is a paradigmatic stochastic process, and well studied both theoretically as well as experimentally. A natural occurance of Brownian motion is found for micron sized particles immersed in simple, Newtonian fluids. The motion of this particle is then a (nearly) perfect random walk, and obeys a linear (Markovian) stochastic equation. This is not true if the particle is suspended in a viscoelastic fluid, which is characterized by long relaxation times and pronounced nonlinear properties. The latter case if thus a good model system for nonlinear stochastic processes, and studying it is challenging, both theoretically as well experimentally. For example, driving the particle drives the viscoelastic fluid out of equilibrium, so that Brownian motion in a non-equilibrium bath is obtained. We will discuss recent theoretical and experimental progress regarding this scenario. ZOOM MEETING ICTP pio@ictp.it

Seminar

19 May 2020

@ ZOOM MEETING

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Statistical Physics): Brownian Motion in a Non-equilibrium Bath: Theory and Experiment

Speaker(s): Matthias Krüger (Georg-August-Universität Göttingen)

Seminar Start Time: 11:00

Europe/Rome Join Zoom Meeting : https://zoom.us/j/475.819702 Meeting ID: 475-819-702 Abstract: Cerebral vascular pathologies are a widespread and socially significant disease. In particular, cerebral aneurysms can lead to stroke, which ranks second in mortality in the world according to WHO. Large-scale studies conducted over the past decade in the United States show that the existing criteria for making medical decisions (to perform surgery or to observe conservatively) have weak statistical significance, which prompts many researchers to deal with this problem: preoperative modeling of the treatment of cerebral aneurysms. At the same time, the development of mathematical models, as well as the creation of software complexes, can be based only on a high-quality and large-scale array of experimental data.In this study, we consider two approaches that we use to obtain personalized data on vascular pathology, as well as mathematical and numerical modeling based on such experimental data. Zoom Meeting ICTP pio@ictp.it

Seminar

20 May 2020

@ Zoom Meeting

Quantitative Life Sciences

Monitoring of hemodynamics: hydrodynamic characteristics of blood flow and rheology of vessel tissue

Speaker(s): Daniil Parshin - Lavrentyev Institute of Hydrodynamics SB RAS, Novosibirsk State University

Support E-Mail: qls@ictp.it

Seminar Start Time: 11:00

Europe/Rome In this talk I will present our recent experimental results on the antimonene/bismuth selenide interface. We performed STM at the CNR-Tor Vergata in Rome and ARPES at the VUV beamline at ELETTRA. Scanning tunnelling microscopy measurements show the presence of moiré patterns attributed to differently oriented domains of antimonene, and areas of the surface in which antimonene is lattice-matched with the bismuth selenide substrate. The two kinds of domain are attributed to the alpha- and to beta-phase of antimonene. Moreover, we studied the conditions according to which the beta-phase can be favoured with respect to the alpha-antimonene phase. This discovery allowed us to perform ARPES measurements on one and two bilayers of beta-antimonene as single domains. The non-trivial band structure features the presence of a substantial hybridization between antimonene and bismuth selenide states. DFT calculations simulate almost perfectly the electronic band structures allowing us to infer the effects of the proximity between a conventional (antimonene) and a topological (bismuth selenide) insulator. Zoom Meeting ICTP pio@ictp.it

Seminar

20 May 2020

@ Zoom Meeting

Condensed Matter and Statistical Physics

CMSP Seminar (Atomistic Simulation Webinar Series): A Study of the atomic and electronic structure of the anitmonene/bismuth selenide interface: in search of proximity effects

Speaker(s): Roberto Flammini (Istituto di Struttura della Materia ISM-CNR, Roma)

Seminar Start Time: 11:00

Europe/Rome Register in advance for this zoom meeting: https://zoom.us/meeting/register/tJwrcu6hrjwvGd3rxgA4UpjhJI5Cpd8v-XZs Abstract: The concept of soliton provides a useful way to discover elements in a given class of geometric structures that are somehow distinguished. Solitons sometimes play the role of "best" structures in the case when the most natural ones are not available. We aim in this talk to show that this is being very fruitful in the study of Riemannian, Hermitian, almost-Kähler and G2 structures on manifolds, with a particular strength on Lie groups. We will start discussing and finding solitons in some different contexts, including matrices, polynomials, plane curves, Lie group representations (moment maps) and the variety of Lie algebras. Zoom Meeting ICTP pio@ictp.it

Seminar

21 May 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar: Finding solitons in differential geometry

Speaker(s): Jorge Lauret, FaMAF - Universidad Nacional de Cordoba CIEM - CONICET Cordoba, Argentina

Seminar Start Time: 14:00

Europe/Rome The 2019 Dirac Medal and Prize Ceremony will take place on Friday 22 May 2020 during the ICTP Summer School on Cosmology 2020 (smr3467) ICTP awarded its 2019 Dirac Medal and Prize to three physicists whose research has made a profound impact on modern cosmology. Viatcheslav Mukhanov (Ludwig Maximilian University of Munich), Alexei Starobinsky (Landau Institute for Theoretical Physics) and Rashid Sunyaev (Max Planck Institute for Astrophysics) share the prize for “their outstanding contributions to the physics of the Cosmic Microwave Background (CMB) with experimentally tested implications that have helped to transform cosmology into a precision scientific discipline by combining microscopic physics with the large scale structure of the Universe.” All three winners have made important contributions to the understanding of the early Universe in the context of inflationary cosmology. The feature article is available at: https://www.ictp.it/about-ictp/media-centre/news/2019/8/dirac-medal.aspx More details and the programme outline will follow. All are welcome to attend the events which will be livestreamed from the ICTP website. Light refreshments will be served. About the ICTP Dirac Medal First awarded in 1985, ICTP's Dirac Medal is given in honor of P.A.M. Dirac, one of the greatest physicists of the 20th century and a staunch friend of the Centre. It is awarded every year on Dirac's birthday, 8 August, to scientists who have made significant contributions to theoretical physics. For more details about the prize and a list of past winners, see: https://www.ictp.it/about-ictp/prizes-awards/the-dirac-medal.aspx. ICTP ICTP pio@ictp.it

Ceremony

22 May 2020

@ ICTP

2019 Dirac Medal and Prize Ceremony: POSTPONED UNTIL FURTHER NOTICE

Address: Strada Costiera 11 34152 Trieste, Italy

Room: Leonardo Building - Budinich Lecture Hall

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 26 June as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx The purpose of the Workshop is to bring together scientists working on the characterization of electrochemical interfaces at the atomistic level, and developing characterization methods, to discuss developments, current challenges, and perspectives. The workshop is dedicated to the characterization of electrochemical interfaces by means of advanced experimental and theoretical techniques. The focus will be on the understanding at atomic level of interface structure and stability, charge dynamics and charge transfer, chemical adsorption and reactivity. Space will be devoted to advances in interface-sensitive characterization techniques. Consequences of the progress in the field will be discussed in the context of applications to catalysis, energy conversion and storage, and environmental remediation. Topics: • Atomic structure of electrochemical interfaces • Charge dynamics and charge transfer • Electrochemical reactions at interfaces • Interface-sensitive experimental techniques • Computer simulations of electrochemical interfaces Applicants should submit a title and abstract for a poster to be presented at the workshop. Title and abstract of accepted posters will be publicly available. Speakers: A. BIEBERLE-HÜTTER, DIFFER, the Netherlands R. KRAMER CAMPEN, Fritz Haber Institute, Germany K. CHAN, Technical University of Denmark J. CHENG, Xiamen University, China A. COWAN, Liverpool University, UK T. CUK, University of Colorado Boulder, USA J. DURRANT, Imperial College London, UK M.-P. GAIGEOT, University Paris Saclay, France J. GIBBS, University of Alberta, Canada A. GROSS, University of Ulm, Germany M. IANNUZZI, University of Zürich, Switzerland T. E. JONES, Fritz Haber Institute, Germany J. LIBUDA, University Erlangen-Nürnberg, Germany W. LIU, Fudan University, China N. MARZARI, EPFL, Switzerland A. PASQUARELLO, EPFL, Switzerland D. PRENDERGAST, Lawrence Berkeley National Laboratory, USA B. ROLDAN CUENYA, Fritz Haber Institute, Germany K. ROSSO, Pacific Northwest National Laboratory, USA R. SCHLÖGL, Fritz Haber Institute, Germany M. SPRIK, University of Cambridge, UK P. STRASSER, TU Berlin, Germany J. TANG, University College London, UK F. M. TOMA, Lawrence Berkeley National Laboratory, USA M. TODOROVA, MPI for Iron Research, Germany R. VAN DE KROL, Helmholtz Zentrum Berlin, Germany Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

25 May 2020 - 29 May 2020

@ ICTP

Condensed Matter and Statistical Physics , New Research Areas (Renewable Energies)

Workshop on Physics and Chemistry of Solid/Liquid Interfaces for Energy Conversion and Storage * CANCELLED * | (smr 3447)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Simone Piccinin (CNR-IOM, Italy), Marialore Sulpizi (Johannes Gutenberg University Mainz, Germany), Nicola Seriani (ICTP), Local Organiser: Ralph Gebauer

Support E-Mail: smr3447@ictp.it

** CANCELLED **

Europe/Rome In response to the recent developments regarding COVID-19 and following the extension of the red zone to the entire Italian territory, and the possibility of a prolonged emergency situation, the Workshop has been POSTPONED to 2021. Please keep checking this page for the new, official dates. More details at https://www.ictp.it/about-ictp/media-centre/news/2020/3/covid-19-update-10-march.aspx Life is a nonequilibrium phenomenon, requiring the constant consumption of energy to circumvent the pernicious effects of fluctuations. Recent advances in experimental techniques and in the theory of nonequilibrium processes offer new opportunities for the study of fluctuations in biological systems. What are the energetic costs of key processes needed to sustain life at the cellular level? What statistical features are unique in biological systems? How can we harvest energy efficiently from living matter? What is the biological relevance of fundamental results such as the fluctuation theorems and the thermodynamic uncertainty relation? This workshop aims at gathering active scientists (experimentalists and theorists) from different domains across physics and biology who have made significant contributions to address fluctuations in living systems. The workshop will provide a unique framework for researchers from developing countries to establish a scientific dialogue with their counterparts from around the world performing cutting-edge research in physics and biology. Students and early career scientists will get a flavour of the possibilities and outstanding questions in biophysics. The aim of the workshop is to discuss existing efforts on understanding nonequilibrium fluctuations using biological and physical methods, but more importantly, to identify future questions in this domain and the collaborations that will help to answer them. Key topics include: Sensory systems, oscillators and memory Active matter Cytoskeleton and membrane dynamics Molecular motors Nonequilibrium thermodynamics ICTP ICTP pio@ictp.it

Activity

25 May 2020 - 29 May 2020

@ ICTP

Quantitative Life Sciences

Signatures of Nonequilibrium Fluctuations in Life * POSTPONED * | (smr 3446)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Secretary: Erica Sarnataro

Organizer(s): Jordan Horowitz (University of Michigan), Saar Rahav (Technion), Vaishnavi Ananthanarayanan (Indian Institute of Science Bangalore), Edgar Roldan (ICTP), Local Organiser: Antonio Celani

Cosponsor(s): EMBOembo, ICAM-Institute for Complex Adaptive Mattericam

Europe/Rome I present a novel soliton equation which is related to a particular integrable system of Calogero-Moser-Sutherland (CMS) type. I plan to spend time on background and motivation to our results (starting with Russell’s first observation of solitary waves in 1834). Based on: https://arxiv.org/abs/2001.04462. Virtual ICTP pio@ictp.it

Seminar

26 May 2020

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Statistical Physics): On Solitons and Calogero-Moser-Sutherland Systems

Room: For additional information, please contact us via email at: rarias@sissa.it

Speaker(s): Edwin Langmann (Royal Institute of Technology, AlbaNova Center)

Seminar Start Time: 11:00

Europe/Rome When we ask ourselves what is the structure of polypeptide/crystal interfaces in the context of either materials recognition by oligopeptides or of protein-controlled mineralization, we may have in mind a rather static picture with atoms occupying ordered positions, as obtained for instance by diffraction experiments. However, on the one hand biomineralization often proceeds via the initial formation of disordered inorganic precursors, which are converted to crystalline phases only at a later stage. On the other hand, peptides that recognise and bind specifically to crystalline oxide facets mostly present a disordered ensemble of secondary structures. This makes a characterization of the atomic-level details of such interfaces very challenging both for experiments and for simulations. In this talk I will present results of our investigations into the precipitation of FeOx(OH)y, as induced for instance by ferritin proteins, and into ZnO-binding peptides interacting with ZnO crystals in liquid environments. Our goal is to attempt to find ordered patterns within the disordered structures and conformational ensembles by a combination of all-atom molecular dynamics simulation with atomic-force microscopy and circular dichroism spectroscopy. Virtual ICTP pio@ictp.it

Seminar

27 May 2020

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (Atomistic Simulation Webinar Series): Order and disorder at bio-inorganic interfaces: the cases of ZnO binding peptides and FeOx(OH)y biomineralization

Speaker(s): Lucio Colombi Ciacchi (Conrad Naber Endowed Chair, Hybrid Materials Interfaces Group, Faculty of Production Engineering, University of Bremen, Germany)

Seminar Start Time: 11:00

Europe/Rome Join Zoom Meeting https://zoom.us/j/475819702 Meeting ID: 475-819-702 To obtain the password for this zoom meeting, please contact qls@ictp.it Dr Kraenkel will present the current epidemic situation in Brazil and describe the efforts to contribute to public debate and decision making by means mathematical modelling. Dr Kraenkel will talk about scenario exploration as a means of planning action and about indicators to follow the situation in almost real time. Results refer to the municipality of São Paulo, as well as for Brazil. Zoom Meeting ICTP pio@ictp.it

Seminar

27 May 2020

@ Zoom Meeting

Quantitative Life Sciences

Modelling Covid-19 in Brazil

Speaker(s): Roberto André Kraenkel (IFT-UNESP-INSTITUTO DE FÍSICA TEÓRICA DA UNESP)

Support E-Mail: qls@ictp.it

Seminar Start Time: 15:00

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJwrcu6hrjwvGd3rxgA4UpjhJI5Cpd8v-XZs After registration, you will receive a confirmation email containing information about joining the meeting Abstract: I will illustrate concepts of mirror symmetry using symplectic Lefschetz fibrations and will discuss how deformations of complex structures may affect mirrors. Zoom Meeting ICTP pio@ictp.it

Seminar

28 May 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar: Mirror Symmetry from a football point of view

Speaker(s): Elizabeth Gasparim (Universidad Catolica del Norte, Chile)

Seminar Start Time: 14:00

Europe/Rome Due to Covid-19 pandemic, the 2020 edition of ASESMA has been postponed to 2021 and will be held as an online school, see: 6th African School on Electronic Structure Methods and Applications (ASESMA-2021) - smr3578 Kigali ICTP pio@ictp.it

Activity

1 Jun 2020 - 12 Jun 2020

@ Kigali

Condensed Matter and Statistical Physics

6th African School on Electronic Structure Methods and Applications (ASESMA-2020) * POSTPONED * | (smr 3449)

Secretary: Nicoletta Ivanissevich

Organizer(s): Omolulu Akin-Ojo (EAIFR), G. Gebreyesus Hagoss (University of Ghana), Sinéad Griffin (LBNL), Richard Martin (Stanford University), Shobhana Narasimhan (JNCASR Bangalore), Steve Ndengue (EAIFR), Nicola Seriani (ICTP), ICTP Scientific Contact: Nicola Seriani

Cosponsor(s): EAIFReaifr, MARVELmarvel, Thomas Young Centretyc, Centre for Doctoral Training on Theory and Simulation of Materials (TSM-CDT)tsm-cdt, IUPAPiupap, National Institute for Theoretical Physicsnithep

**DEADLINE: 05/03/2020**

Europe/Rome Mini course of four lectures by Ashoke Sen on "D-Instanton Perturbation Theory" Due to Covid-19, the workshop will be held online. Links to the videoconferences will be available on the webpage. There is no registration fee and all lectures will be broadcast live. https://www.ictp-saifr.org/workshop-on-fundamental-aspects-of-string-theory/ ICTP-SAIFR, Sao Paulo, Brazil ICTP pio@ictp.it

Seminar

1 Jun 2020 - 4 Jun 2020

@ ICTP-SAIFR, Sao Paulo, Brazil

Strings and Higher Dimensional Theories

Workshop on Fundamental Aspects of String Theory - Week 1

Organizer(s): Nathan Berkovits (ICTP-SAIFR/IFT-UNESP, Brazil) Ted Erler (ACSR, Prague, Czech Republic) Thiago Fleury (IIP-UFRN, Brazil) Carlo Maccaferri (Turin University and INFN, Italy) Yuji Okawa (Tokyo University Komaba, Japan) Martin Schnabl (Charles University – Prague, Czech Republic) Ashoke Sen (Harish-Chandra Research Institute, India) Brenno Vallilo (Univ. Andres Bello, Chile) Barton Zwiebach (MIT, USA)

Seminar Start Time: 15:00

Europe/Rome To register to the Seminar Series please do it here. Please do it before 3 p.m. Monday 1st of June. Abstract: Room temperature ionic liquids (IL) are a class of ionic compounds consisting of an organic cation and either an organic or inorganic anion, whose melting temperature is below 100 °C, making them liquid at or near room temperature. Recently, the studies on the toxicity of IL toward living organisms has stimulated several chemical–physical investigation on the interaction between IL/water mixtures and basic biological systems, such as saccharides, membranes, peptides/proteins and nucleic acids. For instance, it has been found that certain IL exhibit several positive effects on proteins, including an increased thermal stability, the suppression of aggregation and an enhanced refolding ability. Other examples concern the observed unusual stability of deoxyribonucleic DNA stored at room temperature in IL/water solutions that has stimulated growing interest in using IL/water solutions as alternative solvents for DNA preservation and stabilization. Despite the increasing number of experimental and theoretical investigations on the chemical physics properties of systems made of IL and biomolecules, the deep knowledge on the basic principles able to organize and rationalize the vast variety of properties and phenomena displayed by these systems is still lacking. Synchrotron-based UV Resonance Raman spectroscopy (SR-based UVRR) is a powerful technique for revealing new insights on the nature of interactions between aqueous ionic liquids and bio-molecules on the most microscopic scales of their structure and dynamics. In this presentation, we will discuss selected case studies concerning the solvation properties of IL/water toward small peptides and DNA with particular emphasis on the role of water in altering the behavior of IL in case of biomolecules solvated in IL. Our results highlight the opportunity to use spectroscopic approaches for predicting properties of relatively extended families of IL/biomolecules combinations. Virtual ICTP pio@ictp.it

Seminar

3 Jun 2020

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (Atomistic Simulation Webinar Series): On the nature of interactions between water/ionic liquid solutions and bio-molecules revealed by synchrotron-based UV Resonance Raman spectroscopy

Speaker(s): Barbara Rossi (Elettra Sincrotrone Trieste, Italy)

Seminar Start Time: 11:00

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJAsc--spzkqHN0_OmWi80dWNH3Tg89UtJna After registration, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it

Seminar

3 Jun 2020

@ Zoom Meeting

Cosmology

Voronoi volume function: A new probe of cosmology and galaxy evolution

Speaker(s): Aseem Paranjape (IUCAA, India)

Abstract. I will discuss the Voronoi volume function (VVF) - the distribution of cell volumes in the Voronoi tessellation of any sample of cosmological tracers such as galaxies or dark haloes. Using N-body simulations and analytical arguments, I will show that the VVF is sensitive to a variety of physical properties of the sample (mass, large-scale environment, kinematics of substructure, redshift evolution, etc.), which themselves respond to primordial variables such as the shape of the initial matter power spectrum and the linear growth of structure. This makes the VVF an easily measureable and hitherto unexplored probe of both cosmology and galaxy evolution. I will present some preliminary comparisons between the VVF of galaxies observed in the GAMA survey and that of abundance-matched simulated haloes, and also outline possible questions that can be addressed through accurate modelling of the VVF.

Seminar Start Time: 14:30

Europe/Rome Prof. David Hilton Wolpert is an American mathematician, physicist and computer scientist. He is a professor at Santa Fe Institute. He is the author of three books, three patents, over one hundred refereed papers, and has received numerous awards. His name is particularly associated with a group of theorems in computer science known as "no free lunch". Prof. Wolpert obtained a B.A. in Physics at Princeton University (1984), then attended the University of California, Santa Barbara, where he took the degrees of M.A. (1987) and Ph.D. (1989). More information is available at: davidwolpert.weebly.com Abstract: One of the central concerns of computer science is how the resources needed to perform a given computation depend on that computation. Moreover, one of the major resource requirements of computers—ranging from biological cells to human brains to high-performance (engineered) computers—is the energy used to run them, i.e. the thermodynamic costs of running them. Those thermodynamic costs of performing a computation have been a long-standing focus of research in physics, going back (at least) to the early work of Landauer and colleagues. However, one of the most prominent aspects of computers is that they are inherently non-equilibrium systems. Unfortunately, the research by Landauer and co-workers on the thermodynamics of computation was done when non-equilibrium statistical physics was still in its infancy, severely limiting the scope and formal detail of their analyses. The recent breakthroughs in non-equilibrium statistical physics hold the promise of allowing us to go beyond those limitations. Here I present some initial results along these lines, concerning the entropic costs of running (loop-free) digital circuits and Turing machines. These results reveal new, challenging engineering problems for how to design computers to have minimal thermodynamic costs. They also allow us to start to combine computer science theory and stochastic thermodynamics at a foundational level, thereby expanding both. Register in advance for this Joint ICTP-SISSA webinar: https://zoom.us/webinar/register/WN_KtSlytVwRyKnC9tsymekRA After registering, you will receive a confirmation email containing information about joining the webinar. Should you not be able to join the webinar, the Colloquium is also available in live streaming at: ictp.it/livestream All are welcome to attend. Zoom meeting ICTP pio@ictp.it

Colloquium

3 Jun 2020

@ Zoom meeting

ICTP-SISSA Colloquium by Prof. David Wolpert on "The Stochastic Thermodynamics of Computation"

Speaker(s): Prof. David Wolpert, Santa Fe Institute, USA

Colloquium Start Time: 16:00

Seminar

4 Jun 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar: Joint ICTP/Rio de Janeiro Webinar on Analysis and PDEs "Certainty vs. uncertainty"

Speaker(s): Emanuel Carneiro (ICTP)

Starts: 15:00 - Italy time

Seminar Start Time: 15:00

Europe/Rome Virtual Workshop The workshop will be held on June 8, June 12 and June 16, 2020 10/06 sessions are postponed to 16/06 in light of the Black Lives matter strike Abstract Hydrodynamics plays a crucial role in many branches of physics. It can be regarded as an effective field theory for the dynamics of slow conserved modes of many-body systems that emerge at large scales, describing the evolution from local to global equilibrium. Recently, the notion of hydrodynamics was generalized to describe the behavior of quantum integrable systems that are characterized by an infinite number of conserved quantities. This workshop will gather a core group of outstanding young scientists, and will aim to set new directions for future research in the field. Workshop Description The last decade witnessed an intense combined effort of both experimentalists and theorists aimed at understanding quantum matter out of equilibrium. The main research themes concerned the identification of universal structures emerging at finite times and the description of the eventual relaxation. In systems characterised by an extensive number of conservation laws (integrable systems, including many paradigmatic models of quantum many-body physics such as the Hubbard, Heisenberg, and Lieb-Liniger models), a rich set of hydrodynamic laws was found to emerge. These laws, which have been grouped under the name of “Generalised Hydrodynamics” (GHD), offered a variety of applications ranging from the study of transport in simple materials to the quantitative description of cold-atom experiments. Generalised Hydrodynamics is now understood as a wide-ranging framework encompassing both quantum and classical systems, and has fostered surprising new developments in integrability, statistical mechanics and fluid theory. In gathering together a core group of outstanding scientists, we aim to set new directions for future research in the field. For instance, one of the cutting edges of the field is to understand how the hydrodynamic regime is reached. Moreover, a general understanding of anomalous transport properties is missing, higher-order gradient corrections needed to capture low-frequency transport remain mysterious, and the role of the inevitable integrability-breaking perturbations present in any experiment is poorly understood. Those exciting challenges call for the development of new mathematical techniques to describe out-of-equilibrium phenomena in strongly interacting low-dimensional quantum systems, and integrable systems provide the ideal testbed to develop such ideas. Topics: Emergence of GHD Diffusion and higher-order corrections Anomalous transport Hydrodynamics of integrability breaking Low temperature hydrodynamics, quantum corrections Bose gas experiments Entanglement dynamics Cellular automata Speakers: A. BASTIANELLO, University of Amsterdam, The Netherlands V. BULCHANDANI, UC Berkeley, USA A. CORTES-CUBERO, University of Amsterdam, The Netherlands J. DE NARDIS, Ghent University, Belgium J. DUBAIL, Université de Lorraine, France M. FAGOTTI, Université Paris-Saclay, France S. GOPALAKRISHNAN, CUNY, USA K. KLOBAS, University of Ljubljana, Slovenia M. MEDENJAK, ENS Paris, France F. MØLLER, Technische Universität Wien, Austria L. PIROLI, Max Planck Institute Garching, Germany P. RUGGIERO, Université de Genève, Switzerland T. YOSHIMURA, Tokyo Institute of Technology, Japan ICTP ICTP pio@ictp.it

Activity

8 Jun 2020 - 19 Jun 2020

@ ICTP

Condensed Matter and Statistical Physics

Emergent Hydrodynamics in Integrable Quantum Many-body Systems and Beyond | (smr 3514)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Bruno Bertini (University of Ljubljana), Benjamin Doyon (King’s College London), Romain Vasseur (University of Massachusetts), Local Organiser: Marcello Dalmonte

Cosponsor(s): Trieste Institute for the Theory of Quantum Technologies (TQT)tqt

Support E-Mail: smr3514@ictp.it

**DEADLINE: 31/05/2020**Virtual activity

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 26 June as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx The deadline has been extended to 31 December 2019. The school is a certificate course providing a unique international education aimed at building future leadership to manage nuclear energy programmes. It is intended for promising young professionals from the nuclear industry and academia, including those from developing countries. Jointly organized by ICTP and the IAEA since 2010, this Nuclear Energy Management (NEM) School focuses on broadening the young professional’s understanding of current issues in the nuclear industry, generating awareness on recent developments in nuclear energy and sharing international perspectives on issues related to the peaceful use of nuclear technology. Over 30 experts from the IAEA and the nuclear industry deliver more than 70 presentations and case studies. Technical visits to nuclear facilities form an essential practical element of the curriculum and students are asked to work on special projects relevant to the development of nuclear energy programmes. Participants will be selected based on an online pre- training course and a test. Topics: • World Energy Balance, Geopolitics and Climate Issues; • Energy Planning, Energy Economics and Nuclear Power Economics and Finance; • Nuclear Power Technology and Life Cycle; • Nuclear Safety and Security; • Nuclear Law, International Conventions and Relevant Mechanisms; • Nuclear Non-Proliferation and Safeguards; • Human Resource Development and Knowledge Management; • Nuclear Leadership, Management and Sociology; • Emergency Planning and Preparedness; • Radioactive Waste Management and Decommissioning; • Communicating Radiation Risks to the Public; • IAEA support for Nuclear Power Development. Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

8 Jun 2020 - 19 Jun 2020

@ ICTP

Joint ICTP-IAEA Nuclear Energy Management School * CANCELLED * | (smr 3451)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Maria Elena Urso (IAEA), Local Organiser: Claudio Tuniz

Cosponsor(s): International Atomic Energy Agencyiaea3

**DEADLINE: 31/12/2019**

Europe/Rome 2020 Workshop on String Field Theory and Related Aspects Due to Covid-19, the workshop will be held online. Links to the videoconferences will be available on the webpage. There is no registration fee and all lectures will be broadcast live. https://www.ictp-saifr.org/workshop-on-fundamental-aspects-of-string-theory/ ICTP-SAIFR, Sao Paulo, Brazil ICTP pio@ictp.it

Seminar

8 Jun 2020 - 12 Jun 2020

@ ICTP-SAIFR, Sao Paulo, Brazil

Strings and Higher Dimensional Theories

Workshop On Fundamental Aspects of String Theory - Week 2

Seminar Start Time: 14:00

Seminar

9 Jun 2020

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Statistical Physics): Quantum fields in curved space-times with atomic and optical systems: New Directions from synthetic gauge fields and quantum emitters

Speaker(s): Iacopo Carusotto (INO-CNR BEC Center and Università di Trento)

Seminar Start Time: 11:00

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJEqcu6hqz4tGdeprrg097d5Ys9-aOSRF1Ue After registration, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it

Seminar

9 Jun 2020

@ Zoom Meeting

Cosmology

Photon number conserving semi-numerical models of reionization

Speaker(s): Tirthankar Roy Choudhury (TIFR, India)

Seminar Start Time: 14:30

Europe/Rome Join Zoom Meeting https://zoom.us/j/475819702 Meeting ID: 475-819-702 To obtain the PASSWORD for this zoom meeting, please contact qls@ictp.it The traditional approach of statistical physics to supervised learning routinely assumes unrealistic generative models for the data: usually inputs are independent random variables, uncorrelated with their labels. Only recently, statistical physicists started to explore more complex forms of data, such as equally-labelled points lying on (possibly low dimensional) object manifolds. Here we provide a bridge between this recently-established research area and the framework of statistical learning theory, a branch of mathematics devoted to inference in machine learning. The overarching motivation is the inadequacy of the classic rigorous results in explaining the remarkable generalization properties of deep learning. We propose a way to integrate physical models of data into statistical learning theory, and address, with both combinatorial and statistical mechanics methods, the computation of the Vapnik-Chervonenkis entropy, which counts the number of different binary classifications compatible with the loss class. As a proof of concept, we focus on kernel machines and on two simple realizations of data structure introduced in recent physics literature: k-dimensional simplexes with prescribed geometric relations and spherical manifolds (equivalent to margin classification). Entropy, contrary to what happens for unstructured data, is nonmonotonic in the sample size, in contrast with the rigorous bounds. Moreover, data structure induces a novel transition beyond the storage capacity, which we advocate as a proxy of the nonmonotonicity, and ultimately a cue of low generalization error. The identification of a synaptic volume vanishing at the transition allows a quantification of the impact of data structure within replica theory, applicable in cases where combinatorial methods are not available, as we demonstrate for margin learning. Zoom Meeting ICTP pio@ictp.it

Seminar

9 Jun 2020

@ Zoom Meeting

Quantitative Life Sciences

Statistical Learning Theory of geometrically structured data

Speaker(s): Pietro Rotondo - Department of Physics, University of Milan

Support E-Mail: qls@ictp.it

Seminar Start Time: 15:00

Hosted Activity

10 Jun 2020 - 12 Jun 2020

@ Trieste - Italy

European Dialog on Internet Governance, EuroDIG (on-line) | (smr H610)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: On-line

Organizer(s): EuroDIG,

Europe/Rome Registration Instructions: - If you have already registered for a previous CMSP seminar there is no need to register again. Please remember to use the link within the email you received after the registration to join the webinar. - If you have NOT registered before, please make sure to register several days in advance before the webinar to the Seminar Series by clicking here. ___________________________________________________________________ Abstract: Over the last two decades, researchers have invested enormous research effort into hybrid/organic photovoltaics, leading to the recent launch of the first commercial products that use this technology. Dye-sensitized solar cells (DSCs) have shown clear advantages over competing technologies. The top certified efficiency of DSCs exceeds 11% and the lab-cell efficiency is greater than 13%. In 2012, the first reports of high efficiency solid-state solar cells based on organohalide lead perovskites completely revolutionized the field. These materials are used as light-absorbers in DSCs and as light-harvesting and electron conductor in meso-superstructured and flat heterojunction perovskite solar cells (PSCs) and show certified efficiencies that currently exceed 25%. To effectively compete with conventional photovoltaics, emerging technologies need to achieve higher efficiency and stability, while maintaining low production costs. Many of the advances in the DSCs and PSCs field have relied on the computational design and screening of new materials. Suitable modeling strategies further allow researchers to observe the otherwise inaccessible but crucial hetero-interfaces that control the solar cell operation, allowing researchers the opportunity to develop new and more efficient materials and optimize processes. We illustrate the basic device architectures and operating principles of both DSCs and PSCs highlighting the fundamental modeling strategies and revealing fundamental aspects of the device’s operational mechanism. Although the modeling of DSCs is relatively mature, the recent “perovskite storm” has presented new problems and new modeling challenges, such as understanding exciton formation/dissociation at interfaces and carrier recombination in these materials. References: 1. De Angelis, F. Acc. Chem. Res. 2014, 47, 3349. 2. De Angelis, F.; Di Valentin, C.; Fantacci, S.; Vittadini, A.; Selloni, A. Chem. Rev. 2014, 114, 9708. 3. Azpiroz, J. M.; Mosconi, E.; Bisquert, J.; De Angelis, F. Energy Environ. Sci. 2015, 8, 2118. 4. Mosconi, E.; Meggiolaro, D.; Snaith, H.; Stranks, S. D.; De Angelis, F. Energy Environ. Sci. 2016, 9, 3180. 5. Quarti, C.; Mosconi, E.; Ball, J. M.; D'Innocenzo, V.; Tao, C.; Pathak, S.; Snaith, H.; Petrozza, A.; De Angelis, F. Energy Environ. Sci. 2016, 9, 155. 6. Chen, B.; Li, T.; Dong, Q.; Mosconi, E.; Song, J.; Chen, Z.; Deng, Y.; Liu, Y.; Ducharme, S.; Gruverman, A.; De Angelis, F.; Huang, J. Nat. Mater., 2018, 17, 1020-1026. 7. De Angelis, F.; Petrozza, A. Nat. Mater., 2018, 17, 377–384. 8. Yang S.; Chen S.; Mosconi E.; Fang Y.; Xiao X.; Wang C.; Zhou Y.; Yu Z.; Zhao J.; Gao Y.; De Angelis F.; Huang J. Science, 2019, 365, 473–478. 9. Motti S. G.; Meggiolaro D.; Barker A. J.; Mosconi E.; Perini C. A. R.; Ball J. M.; Gandini M.; Kim M.; De Angelis F.; Petrozza A. Nat. Photonics, 2019, 15, 532–539. 10. De Angelis F. ACS Energy Lett., 2020, 5, 935-937. Virtual Atomistic Webinar ICTP pio@ictp.it

Seminar

10 Jun 2020

@ Virtual Atomistic Webinar

Condensed Matter and Statistical Physics

CMSP Seminar (Atomistic Simulation Webinar Series): Modeling Materials and Processes in Hybrid/Organic Photovoltaics: From Dye-sensitized to Perovskite Solar Cells

Speaker(s): Filippo De Angelis (Dept. of Chemistry, Univ. of Perugia and Computational Lab. for Hybrid/Organic Photovoltaics CLHYO, CNR-SCITEC, Perugia, Italy)

Seminar Start Time: 11:00

Europe/Rome Paolo Carloni is Professor in computational biophysics at the Department of Physics of RWTH-University of Aachen, Aachen, Germany, and Director of the Institute for Computational Biomedicine at the Juelich Research Center, Juelich, Germany, after spending a dozen years as Professor in SISSA, Trieste, Italy (1998-2009). He also holds a position as Co-director of the Key Laboratory for multi-scale modeling at the VNU University of Science in Hanoi, Vietnam. Carloni's research focuses on molecular simulation and bioinformatics approaches to molecular biophysics, molecular medicine and structural genomics. Abstract: The human brain is the most complex organ known in nature. It features more than 80 billion neurons each making thousands of synaptic connections with other neurons. The communication between neurons at synapses is chemical. It involves proteins, small molecules, and other biomolecules such as RNA. Hence, a molecular-level description of chemotransmission is really important to ultimately understand brain function and dysfunction. Here, we will present recent multi scale molecular simulation studies (from quantum to coarse grain) of key molecular processes occurring during chemotransmission. This knowledge is used to identify new ligands interfering with neurological diseases. In the final (and short) part of my talk I will completely switch gears. Given the recent Covid-19 pandemic, our group, as many other simulation groups worldwide, has recently re-directed part of the research to help combat the virus, helping the scientific community by data sharing (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7194014/). Here, I will briefly describe our current effort, within an EU project involving 18 research units, to identify possibly molecules which may bind and inhibit Covid-19 proteins. The talk (approx. 40 minutes) will be in a webinar format, with an introduction by the Director. A question/answer session will follow. PLEASE REGISTER AHEAD FOR THIS WEBINAR AT THE FOLLOWING LINK: https://zoom.us/webinar/register/WN_lJj2IyUsTbCf298uZ__ytw After registering, you will receive a confirmation email containing information about joining the webinar. The talk will also be livestreamed from the ICTP website. Zoom meeting ICTP pio@ictp.it

Colloquium

10 Jun 2020

@ Zoom meeting

ICTP Colloquium by Prof. Paolo Carloni on "Computational molecular medicine: from neurobiology to Covid-19"

Speaker(s): Prof. Paolo Carloni, University of Aachen, and Forschungszentrum Juelich GmbH, Germany

Colloquium Start Time: 15:00

Seminar

11 Jun 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar: Singular cscK metrics

Speaker: Kai Zheng (School of Mathematical Sciences, Tongji University, Shanghai)

Seminar Start Time: 14:00

Seminar

11 Jun 2020

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (News and Views): Topology, Molecular Simulation and Machine Learning as Routes to Exploring Structure and Phase Behavior in Molecular and Atomic Crystals

Speaker(s): Mark E. Tuckerman (NYU, Arts and Science, New York, U.S.A.)

Seminar Start Time: 15:00

Activity

15 Jun 2020 - 26 Jun 2020

@ ICTP

High Energy Cosmology and Astroparticle Physics

New Pathways in Explorations of Quantum Field Theory and Quantum Gravity Beyond Supersymmetry - II * CANCELLED * | (smr 3454)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Budinich Lecture Hall (LB)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Francesco Benini (SISSA), Atish Dabholkar (ICTP), Leopoldo Pando Zayas (University of Michigan), Cumrun Vafa (Harvard University), Local Organiser: Pavel Putrov

Cosponsor(s): Italian Institute for Nuclear Physicsinfn

Support E-Mail: smr3454@ictp.it

* CANCELLED *

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 26 June as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx ICTP ICTP pio@ictp.it

Activity

15 Jun 2020 - 3 Jul 2020

@ ICTP

Earth System Physics

Joint Summer School on Modelling Tools for Sustainable Development * CANCELLED * | (smr 3453)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Euler Lecture Hall (LB) -> week 1 and 2 + 3 days week 3; Budinich Lecture Hall (LB) -> 2 last days week 3; Diploma Program Room B,D

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Mark Howells (KTH), Local Organiser: Adrian Tompkins

Cosponsor(s): A GLOBAL COMMUNITY OF PRACTICEoptimus1, Department for International Developmentukaid, Imperial College Londonicl2, International Atomic Energy Agencyiaea3, KTH ROYAL INSTITUTE OF TECHNOLOGYkth1, Loughborough Universitylboro, UN Department of Economic and Social Affairsundesa1, United Nations Development Programmeundp1, United Nations Economic Commission for Africauneca, University of Cambridgecambridge, University of Oxfordoxford2, The Open Universityopenuniv, The World Bank Groupwbank2

Support E-Mail: smr3453@ictp.it

Seminar

16 Jun 2020

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Statistical Physics): Thermalization, Chaos and Holography

Speaker(s): Jan de Boer (Amsterdam University)

Seminar Start Time: 11:00

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJcpcuCpqDsuH9fJOnjD7ywG5yGcgHD-H1Zh After registration, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it

Seminar

16 Jun 2020

@ Zoom Meeting

Phenomenology of Particle Physics

Exploring mass-degeneracies in extended Higgs sectors

Speaker(s): Shoaib Munir (EAIFR)

Seminar Start Time: 14:30

Europe/Rome Join Zoom Meeting https://zoom.us/j/475819702 Meeting ID: 475-819-702 To obtain the PASSWORD for this zoom meeting, please contact qls@ictp.it Communities of interacting microbes perform fundamental processes on Earth, such as cycling the elements and shaping our health. These processes arise from a dense network of interactions between individual cells in the community. Many microbial communities are spatially structured, thus interaction occur mostly between cells close in space. Therefore, the spatial arrangement of different cell types determines the interactions that occur and therefore the processes that the whole community performs. I observe microbial communities at the single-cell level and I reconstruct the spatial network of interaction between cells. I combine these experiments with mathematical modeling to elucidate how community-level properties arise from the activity and the interactions between single cells. Zoom Meeting ICTP pio@ictp.it

Seminar

16 Jun 2020

@ Zoom Meeting

Quantitative Life Sciences

Spatial Organization of Organisms and Functions in Bacterial Communities

Speaker(s): Alma Dal Co, Harvard University, Department of Engineering and Applied Sciences

Support E-Mail: qls@ictp.it

Seminar Start Time: 15:00

Seminar

17 Jun 2020

@ Virtual Atomistic Webinar

Condensed Matter and Statistical Physics

CMSP Seminar (Atomistic Simulation Webinar Series): Molecular Simulations with Focus on Atmospheric Processes

Speaker(s): Daniel Schlesinger (Dept. of Environmental Science (ACES) Atmospheric Science Unit & Bolin Centre for Climate Research, Stockholm University, Sweden)

Seminar Start Time: 11:00

Europe/Rome Register in advance for this meeting: https://zoom.us/meeting/register/tJ0uduytpzMpHdMgurlJYLSSXE45vlfdrDXk After registering, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it

Seminar

17 Jun 2020

@ Zoom Meeting

Strings and Higher Dimensional Theories,Condensed Matter and Statistical Physics

HECAP-CMSP Joint Seminar: Boundary Conditions for Chiral Fermions

Speaker(s): David Tong (University of Cambridge)

Abstract. I will describe boundary conditions for fermions in d=1+1 dimensions, using the framework of boundary conformal field theory. I will explain how boundary states are classified by a mod 2 index, related to their SPT phase, describe how one can follow RG flows from one boundary state to another, and give a novel perspective on the Z_8 classification of d=2+1 SPT phases.

Seminar Start Time: 14:30

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJwrcu6hrjwvGd3rxgA4UpjhJI5Cpd8v-XZs After registration, you will receive a confirmation email containing information about joining the meeting. Abstract: In this talk I will discuss symmetries of complex algebraic varieties. When studying a projective variety $X$, one usually wants to understand its symmetries. Conversely, the structure of the group of automorphisms of $X$ encodes relevant geometric properties of $X$. After describing some examples of automorphism groups of projective varieties, I will discuss why the notion of automorphism is too rigid in the scope of birational geometry. We are then led to consider another class of symmetries of $X$, its birational self-maps. The group of birational self-maps of the projective space $\mathbb{P}^n$ is known as the Cremona group in dimension $n$. Describing the structure of the Cremona group is a major problem in algebraic geometry. While the theory is well developed in dimension $2$, little is known in dimension $\geq 3$, and a natural problem is to construct special subgroups of the Cremona group. I will present a recent work with Alessio Corti and Alex Massarenti, where we investigate subgroups of the Cremona group consisting of symmetries preserving some special meromorphic volume forms. Zoom Meeting ICTP pio@ictp.it

Seminar

18 Jun 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar: Symmetries in Algebraic Geometry and the Cremona Group

Speaker(s): Carolina Araujo (IMPA)

Seminar Start Time: 14:00

Europe/Rome II Joint ICTP-Trieste/ICTP-SAIFR School on Particle Physics Due to COVID-19, the school may need to be postponded or held online. However, the application procedure is unchanged Application deadline: 12 April 2020 Following the tradition of the Summer Schools on Particle Physics at the ICTP in Trieste, the school aims at giving a detailed overview of particle physics, and covering important areas where recent progress has been made in the field. We will have at most three lectures per day, giving ample time for discussion and problem solving by the students. A poster session will be organized for advanced students that wish to show their work. There is no registration fee and limited funds are available for travel and local expenses. Please also refer to following link: https:www.ictp-saifr.org/spp2020/ Organizers: Enrico Bertuzzo (USP, Brazil) Joan Elias Miró (ICTP-Trieste, Italy) Rogerio Rosenfeld (IFT-UNESP/ICTP-SAIFR, Brazil) Giovanni Villadoro (ICTP-Trieste, Italy) São Paulo - Brazil ICTP pio@ictp.it

Activity

22 Jun 2020 - 3 Jul 2020

@ São Paulo - Brazil

High Energy Cosmology and Astroparticle Physics

2nd Joint ICTP and SAIFR School on Particle Physics | (smr 3459)

Secretary: Doreen Sauleek

Organizer(s): Rogério Rosenfeld (IFT and ICTP-SAIFR), Enrico Bertuzzo (USP, Brazil), Joan Elias-Miró (ICTP), ICTP Scientific Contact: Giovanni Villadoro

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 26 June as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx The deadline has been extended to 31 December 2019. The School is a certificate course providing specialized education and training on development and implementation of knowledge management programmes in nuclear science and technology organizations. It is intended for young professionals in current or future leading roles in managing nuclear knowledge. Jointly organized by ICTP and the IAEA since 2004, this Nuclear Knowledge Management (NKM) School focuses on methodologies and practices, and explores various dimensions of nuclear knowledge management. These include processes and tools, challenges and benefits, culture influence, relationship with human resource development, IT for knowledge preservation and sharing. Learning is supplemented with real life examples from NKM programmes in different types of nuclear organizations. The aim is to encourage ‘forward thinking’ and to enable participants to apply theory and insights in their daily work. Pre-training is done via e-learning for a common understanding of the basics, allowing a more efficient interaction with peers and lecturers during the in-class School. Lectures at the ICTP by recognized experts are followed by case studies, practical work and breakout sessions where participants will have the opportunity to discuss issues and solutions. NKM group projects are also developed over the week. Shortlisted candidates will undergo an on-line pre- training course and a test, the results of which will be one of the elements to define the final list of participants. Topics: • Nuclear knowledge and knowledge management fundamentals; • Developing policies and strategies in managing nuclear knowledge; • Managing nuclear information resources; • Human resources development; • Risk of knowledge loss and knowledge transfer; • Practical guidance and good practices on NKM. ICTP ICTP pio@ictp.it

Activity

22 Jun 2020 - 26 Jun 2020

@ ICTP

16th Joint ICTP-IAEA Nuclear Knowledge Management School * CANCELLED * | (smr 3455)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Kastler and Lundqvist Lecture Hall + Meeting Room with glass doors

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): John Roberts (IAEA), Local Organiser: Claudio Tuniz

Cosponsor(s): International Atomic Energy Agencyiaea3

**DEADLINE: 31/12/2019**

Seminar

23 Jun 2020

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Statistical Physics): Cold atoms inspired interacting systems: Beyond the ergodic paradigm

Speaker(s): Jakub Zakrzewski (Institute of Physics, Jagiellonian University, Krakow, Poland)

Seminar Start Time: 11:00

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJUtcOmspz8oHtyelXXkLhGM3RqbUhwKndhs After registration, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it

Seminar

23 Jun 2020

@ Zoom Meeting

Cosmology

The energy of Dark Matter haloes. A new guideline to model virialized structures

Speaker(s): Marcello Musso (EAIFR)

Abstract. Analytical models of the abundance of Dark Matter haloes usually focus on their mean initial overdensity as the parameter that determines where and when virialized regions form. This assumption however leads to a number of inconsistencies and divergencies in the calculation. We argue that a more suitable quantity for this purpose is the initial energy of the protohalo patch. We show how this dynamically motivated choice allows to connect the non-linear evolution of the density field with perturbation theory. We then explore the generation of velocity dispersion in the multistream regime, numerically and by means of a simple analytical model based on spherical collapse. We show how the initial mean energy is crucial to describe the virialization process and to predict the final density profile.

Seminar Start Time: 14:30

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJIqcuGgrTwqGNJluVb3_MrTApmlpnE_Nw7G After registering, you will receive a confirmation email containing information about how to join the meeting. Abstract: The seminar will start with the definition of what is mean curvature flow of a closed hypersurface, illustrated with some basic examples. Next, I will recall the variational nature of the flow and some of the main well-known results, such as Grayson theorem for the evolution of plane curves, and Huisken convexity preserving theorem. At the end of the seminar, some more advanced topics will be mentioned. Zoom Meeting ICTP pio@ictp.it

Seminar

23 Jun 2020

@ Zoom Meeting

Mathematics

Basic Notions Seminar on mean Curvature Flow of closed Hypersurfaces

Speaker(s): Bellettini Giovanni (ICTP/University of Siena)

Seminar Start Time: 16:00

Europe/Rome Abstract: Neptune-sized planets dominate exoplanet discovery surveys. Their interior structure is thought to comprise hydrogen- and helium-rich atmospheres, followed by expansive 'hot ice' mantle regions and, possibly, small rocky cores. High-pressure/high-temperature studies of the majority components of the dense 'hot ice' layer (water, methane, and ammonia) have, individually, reached the conditions present at the lower mantle regions of such planets. Their mixtures, and their interactions with the other planetary layers (the atmosphere and core materials) are much less studied, probably due to the additional compositional complexity and associated challenges regarding rare events (in simulations) and observational uncertainties (in experiments). However, molecular mixtures allow chemical reactions that can drastically alter the composition at specific conditions and therefore govern the depth-density profile, thermal conductivity and evolution, interior convection and magnetism, etc. In this talk I will discuss some of the recent computational progress in studies of complex molecular mixtures at extreme conditions, including 'hot ice' mixtures (such as ammonia-water), ices mixing with atmospheric materials (such as methane or ammonia in the presence of excess hydrogen or helium), and the fate of relatively uncommon species (such as hydrogen sulfide). Based on crystal structure predictions and first principles calculations we will develop a picture of the chemical bonding present in cold dense mixtures before mapping out the high-temperature phase diagrams through ab-initio molecular dynamics simulations and characterising the emerging states up to the fluid regime, juxtaposed against expected conditions in giant icy planets. Virtual Atomistic Webinar ICTP pio@ictp.it

Seminar

24 Jun 2020

@ Virtual Atomistic Webinar

Condensed Matter and Statistical Physics

CMSP Seminar (Atomistic Simulation Webinar Series): High-temperature Phase Evolution in Icy Planet Molecular Mixtures

Speaker(s): Andreas Hermann (School of Physics and Astronomy, University of Edinburgh, U.K.)

Seminar Start Time: 11:00

Seminar

25 Jun 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar: Singular chains on Lie groups and the Cartan relations

Speaker: Camilo Arias Abad (Universidad Nacional de Colombia en Medellin)

Seminar Start Time: 14:00

Europe/Rome Join Zoom Meeting https://zoom.us/j/475819702<span style="font-size:11.0pt;font-family:"LucidaGrande",sans-serif; mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;mso-ansi-language: EN-IE;mso-fareast-language:EN-US;mso-bidi-language:AR-SA"> Meeting ID: <span style="font-size:11.0pt;font-family:"LucidaGrande",sans-serif; mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;mso-ansi-language: EN-IE;mso-fareast-language:EN-US;mso-bidi-language:AR-SA">475-819-702 If you haven't registered for previous QLS webinars, please contact qls@ictp.it to obtain the PASSWORD for this zoom meeting. The study of blood flow in the vicinity of cerebral vascular pathologies is important both from an applied and from a scientific point of view. The main characteristics of blood flow are the dependence of velocity and pressure on time. Currently, the dependence of velocity on time can be measured by various methods (for example, ultrasound). But, currently non-invasive pressure measurement is impossible. In my talk I will present a mathematical model of blood flow, which allows for a particular patient to restore the dependence of pressure on time by the dependence of velocity on time. To build the model under study, clinical data on the pressure and velocity of blood flow in the vessels of the brain in the vicinity of the pathology obtained during neurosurgical operations are used. The model is a nonlinear ordinary differential equation, the coefficients of which are determined by clinical data. We study equation's properties as well as a correlation of equation properties and pathologies properties. Zoom Meeting ICTP pio@ictp.it

Seminar

25 Jun 2020

@ Zoom Meeting

Quantitative Life Sciences

Simple equation describing brain hemodynamics

Speaker(s): Alexander Cherevko, Lavrentyev Institute of Hydrodynamics, Novosibirsk, Russia

Support E-Mail: qls@ictp.it

Seminar Start Time: 14:00

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 26 June as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx The goal is to bring together leading researchers worldwide in complex analysis, geometry, and dynamics, with the aim of enhanced future collaboration. These fields are strongly interrelated, and in order to be able to solve deep challenging problems it is becoming necessary to pursue synergies among them to a bigger degree than in the past. Topics: Holomorphic approximation theory L2 techniques, plurisubharmonic functions, complex pluripotential theory Complex dynamics in higher dimensions Holomorphic directed systems, contact systems Applications of complex analysis to minimal surfaces Flexibility versus rigidity in complex geometry Cauchy-Riemann geometry Monge-Ampėre equations and Kähler manifolds There have been major recent advances in all these topics which the speakers will report on. It is becoming increasingly evident that a deeper level of cooperation will be needed for further progress. Speakers: A. ALARCÓN, University of Granada, Spain D. ANGELLA, University of Firenze, Italy F. BRACCI, University of Rome II-Tor Vergata, Italy F. DENG, University of Chinese Academy of Sciences, China B. DRINOVEC DRNOVŠEK, University of Ljubljana, Slovenia P. EBENFELT, University of California-San Diego, USA V. GUEDJ, University of Toulouse, France J.-M. HWANG, Korea Institute for Advanced Study, Korea S. KOLODZIEJ, University of Cracow, Poland F. KUTZSCHEBAUCH, University of Berne, Switzerland B. LAMEL, University of Vienna, Austria F. LÁRUSSON, University of Adelaide, Australia X. MING, University of California-San Diego, USA S. NEMIROVSKI, Steklov Mathematical Institute, Russia T. OHSAWA, Nagoya University, Japan H. PETERS, University of Amsterdam, The Netherlands D. PHONG, Columbia University, USA N. SHCHERBINA, University of Wuppertal, Germany B. STENSØNES, NTNU, Norway L. STUDER, Universidad Complutense de Madrid, Spain J. WINKELMANN, Bochum University, Germany E. F. WOLD, University of Oslo, Norway E. WULCAN, University of Gothenburg, Sweden A. ZIMMER, Louisiana State University, USA Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

29 Jun 2020 - 3 Jul 2020

@ ICTP

Mathematics

Complex Analysis, Geometry and Dynamics ECM-ICTP 2020 * CANCELLED * | (smr 3457)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Xiangju Zhou (Chinese Academy of Sciences), Xiaojun Huang (Rutgers University), John Erik Fornaess (Norwegian University of Science and Technology), Franc Forstneric (University of Ljubljana), Local Organiser: Claudio Arezzo

Cosponsor(s): 8th European Congress of Mathematicsecm1, European Mathematical Societyems1

Support E-Mail: smr3457@ictp.it

**DEADLINE: 31/03/2020**

Europe/Rome Virtual activity The aim of the conference is to give young researchers from academia and industry the opportunity to gather and present their results related to high-dimensional statistical problems, as arising in machine learning, inference or statistical physics. The focus is on the analytical and rigorous technics that allow to study i) the information theoretic limits and phase transitions phenomena; ii) the algorithmic limits; and iii) the rough energy landscapes arising in these problems. Typical problems in high-dimensions include the detection and estimation of noisy signals (compressed sensing, PCA and tensor decomposition etc), the analysis of (deep) neural-networks and their learning and generalization dynamics, the detection of communities in large networks, or disordered spin systems. While these problems may seem of different natures, they actually share many similarities in their common phenomenology and the tools used to analyze them. The core of the field is made of a very active, diverse and quickly expanding community of physicists, computer scientists, mathematicians, information theorists and engineers, with the common desire to tackle increasingly challenging problems at the forefront of data science. This conference aims at reinforcing the links among this interdisciplinary community, and in particular of its youngest theory-oriented members, and to bring forward the latest development happening in the high-dimensional world. Topics: • High-dimensional probability and statistics • Theoretical machine learning • Theoretical computer science • High-dimensional inference and signal processing • Information theory • Statistical physics of disordered systems Speakers: Q. BERTHET, Google Paris, France E. BOIX, MIT, USA M. BRENNAN, MIT, USA L. BUDZYNSKI, ENS Paris, France Y. DESHPANDE, MIT, USA S. D’ASCOLI, ENS Paris, France A. EL-ALAOUI, Stanford, USA M. GABRIÉ, NYU, USA S. GOLDT, ENS Paris, France A. JAGANNATH, Waterloo University, Canada A. LOKHOV, Los Alamos National Laboratory, USA B. LOUREIRO, ENS Paris, France C. LUCIBELLO, Bocconi University, Italy C. LUNEAU, EPFL, Switzerland A. MAILLARD, ENS Paris, France S. MEI, Stanford, USA E. MINGIONE, EPFL, Switzerland M. MONDELLI, IST, Austria N. MUELLER, Frankfurt University, Germany D. NAGARAJ, MIT, USA V. ROS, ENS Paris, France M. SAENZ, ICTP, Italy L. SAGLIETTI, ENS Paris, France S. SEN, Harvard, USA E. SUBAG, NYU, USA P. SUR, Harvard, USA P. URBANI, IPHT Saclay, France Online - ICTP pio@ictp.it

Activity

29 Jun 2020 - 3 Jul 2020

@ Online -

Quantitative Life Sciences

Youth in High-dimensions: Machine Learning, High-dimensional Statistics and Inference for the New Generation | (smr 3517)

Room: Online

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Florent Krzakala (ENS Paris, France), Jean Barbier (ICTP), Local Organiser: Matteo Marsili

Support E-Mail: smr3517@ictp.it

**DEADLINE: 27/06/2020**

Europe/Rome *** VIRTUAL *** http://strings2020.com/ The Strings conferences have been annual events since 1988 (one year was missed in the 1990’s) and are the major international meeting on string theory as a framework for a new understanding of physics. These conferences generally feature a wide range of talks on contemporary developments involving quantum fields, strings, and gravity, as well as connections with condensed matter physics, quantum information and mathematics and have developed into the premier event in the theoretical physics calendar. This large gathering allows researchers from different parts of the world to interact across sub-fields and the conference regularly sees the presence of many of the most eminent theoretical physicists in the world and has served as the site for the announcement of several major discoveries in the field. This year the Strings conference will see two major new developments. For the first time in its 30 year history it will be hosted by an institution on the African continent and, another first, it will be run as a virtual conference. The conference itself will be hosted on Zoom and live-streamed to Youtube. For registration purposed please refer to the Strings 2020 web page. INVITED SPEAKERS: Ibrahima Bah, Alexander Belin, Clay Cordova, Roger Deane, Netta Engelhardt, Rajesh Gopakumar, David Gross, Shamit Kachru, Charlotte Kristjansen, Juan Maldacena, Samir Mathur, David Meltzer, Shiraz Minwalla, Joao Penedones, Geoff Penington, Andrea Puhm, Suvrat Raju, Nathan Seiberg, Ashoke Sen, Charlotte Sleight, Douglas Stanford, Andy Strominger, Cumrun Vafa, Yifan Wang, Edward Witten & Xi Yin PROGRAMME Cape Town - South Africa ICTP pio@ictp.it

Activity

29 Jun 2020 - 3 Jul 2020

@ Cape Town - South Africa

Strings and Higher Dimensional Theories,High Energy Cosmology and Astroparticle Physics

Strings 2020 | (smr 3506)

Secretary: Nadia van Buuren

Organizer(s): Jeff Murugan - CHAIR (UCT), Pallab Basu (WITS), Robert de Mello Koch (WITS), Kevin Goldstein (WITS), Shajid Haque (UCT), Shinji Hirano (WITS), Will Horowitz (UCT), Vishnu Jejjala (WITS), Nathan Moynihan (UCT), Sanjay Ramgoolam (WITS & QMUL), Joao Rodrigues (WITS), Jonathan Shock (UCT), Amanda Weltman (UCT), Kostas Zoubos (Pretoria), ICTP Scientific Contact: Kyriakos Papadodimas

Cosponsor(s): Department of Science & Innovation, South Africa, National Institute for Theoretical Physics, National Research Foundation, Clay Foundation and IAS, Princeton

Support E-Mail: smr3506@ictp.it

Europe/Rome Investigation of strongly interacting quantum field theories (QFTs) remains one of the outstanding challenges of modern physics. Quantum simulation has the potential to be a crucial technique towards solving this problem. By harnessing the power of quantum information processing, quantum simulation can potentially perform tasks deemed intractable by the classical information processing paradigm. In this talk, I will describe analog quantum simulators for strongly interacting QFTs using mesoscopic quantum electronic circuit lattices. The tunable, robust and dispersive Josephson nonlinearity gives rise to the nonlinear interactions in these QFTs. I will concentrate on the quantum sine- Gordon model and its nontrivial generalizations. In particular, I will show that a two-field generalization, the double sine-Gordon model, is realizable with quantum circuits. In contrast to the sine-Gordon QFT, this model can be purely quantum-integrable, when it does not admit a semiclassical description – a property that is generic to many multifield QFTs. In addition to being experimentally viable with modern-day superconducting circuit technology, the quantum circuits provide lattice-regularized models of these QFTs amenable for numerical simulations. I will present a density matrix renormalization group and exact Bethe ansatz computation results on the thermodynamic properties of the aforementioned QFTs. VIRTUAL ICTP pio@ictp.it

Seminar

30 Jun 2020

@ VIRTUAL

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Statistical Physics): Quantum Electronic Circuit Simulation of Quantum Field Theories

Speaker(s): Ananda Roy (Physik-Department, Technische Universitaet, Munich, Germany)

Seminar Start Time: 11:00

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJcrfu6orzIqHNLeqwgYa2VSb7VITel-fKLU After registering, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it

Seminar

30 Jun 2020

@ Zoom Meeting

Strings and Higher Dimensional Theories

String theory on AdS3 in the tensionless limit

Speaker(s): Gaston Giribet (University of Buenos Aires, Argentina)

Seminar Start Time: 14:30

Europe/Rome Join Zoom Meeting https://zoom.us/j/475819702 Meeting ID: 475-819-702 If you haven't registered for previous QLS webinars, please contact qls@ictp.it to obtain the PASSWORD for this zoom meeting. Animal groups or cellular ensembles represent fascinating examples of self-organized biological systems. In contrast to non-living physical systems, self-organized biological collectives are the result of long-term evolutionary adaptations to a specific ecological niche, where collective behavior provides evolutionary benefits to individual agents. However, collective information processing is also always subject to constraints set by the interaction mechanisms and corresponding self-organized dynamical structure. In my talk, I will discuss examples from our recent research on how the adaptive structure of the collective may interplay with its biological function in terms of collective information processing. Zoom Meeting ICTP pio@ictp.it

Seminar

30 Jun 2020

@ Zoom Meeting

Quantitative Life Sciences

Collective Information Processing - Interplay of self-organization and function in collective (biological) systems

Speaker(s): Pawel Romanczuk - Collective Information Processing Group, Department of Biology / Institute of Theoretical Biology, Berlin, Germany

Support E-Mail: qls@ictp.it

Seminar Start Time: 15:00

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJYkcu6rqz4tHtQO-cRBsFcrqad-WevSbC69 After registration, you will receive a confirmation email containing information about joining the meeting Abstract: We discuss the thermodynamic and ergodic properties of a smooth realization of pseudo-Anosov surface homeomorphisms. In this realization, pseudo-Anosov map is uniformly hyperbolic outside of a neighborhood of a set of singularities, and the trajectories are slowed down so the differential is the identity at the singularities. Using Young towers, we prove existence and uniqueness of equilibrium measures for geometric $t$-potentials. This family of equilibrium measures includes a unique smooth SRB measure and a measure of maximal entropy, the latter of which has exponential decay of correlations and the Central Limit Theorem. Zoom Meeting ICTP pio@ictp.it

Seminar

30 Jun 2020

@ Zoom Meeting

Mathematics

Ergodic and thermodynamic properties of pseudo-Anosov diffeomorphisms

Speaker(s): Dominic Veconi (Penn State University)

Seminar Start Time: 16:00

Seminar

2 Jul 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar: Closed Geodesics on Surfaces without Conjugate Points

Speaker(s): Khadim WAR (IMPA/University of Chicago)

Seminar Start Time: 14:00

Europe/Rome Alessio Figalli is Director of the Forschungsinstitut für Mathematik (FIM), a research institute that was founded in 1964 by Beno Eckmann with the objective to promote and facilitate the exchange and cooperation between ETH Zürich and the international mathematical community. He is chaired Professor at ETH Zürich (Zurich, Switzerland). Figalli works in the broad areas of Calculus of Variations and Partial Differential Equations, with particular emphasis on optimal transportation, Monge-Ampère equations, functional and geometric inequalities, elliptic PDEs of local and non-local type, free boundary problems, Hamilton-Jacobi equations, transport equations with rough vector-fields, and random matrix theory. In 2018, Figalli was awarded the Fields Medal "for his contributions to the theory of optimal transport, and its application to partial differential equations, metric geometry, and probability". ABSTRACT: The classical obstacle problem consists of finding the equilibrium position of an elastic membrane whose boundary is held fixed and which is constrained to lie above a given obstacle. By classical results of Caffarelli, the free boundary is C∞ outside a set of singular points. Explicit examples show that the singular set could be in general (n−1)-dimensional — that is, as large as the regular set. In a recent paper with Ros-Oton and Serra we show that, generically, the singular set has zero Hn−4 measure (in particular, it has codimension 3 inside the free boundary), solving a conjecture of Schaeffer in dimension n ≤ 4. The aim of this talk is to give an overview of these results. Pre-registration for the Colloquium is required at the following link: https://sissa-it.zoom.us/webinar/register/WN_ca93G01TQ6eO0zn99mkp-g After registering, you will receive a confirmation email containing information about joining the webinar. Livestreaming and recording are not foreseen for this talk. This is an event towards ESOF2020. https://www.esof.eu/en/home.html Zoom ICTP pio@ictp.it

Colloquium

2 Jul 2020

@ Zoom

ICTP-SISSA Colloquium by Prof. Alessio Figalli on "Generic Regularity in Obstacle Problems"

Speaker(s): Prof. Alessio Figalli, ETH Zurich, Switzerland

Colloquium Start Time: 16:00

Europe/Rome Update (March 2021): Due to Covid-19 pandemic, the 2020 edition of ASP has been posponed to 2021. Update (May 2020): Since May 2020, weekly seminars / colloquia supplementing the school are held online, via the interactive webinar platform Zoom. Check this link https://www.africanschoolofphysics.org/online-lecture-series/ for upcoming online lectures! Update (March 2020): ASP2020 has been postponed due to ongoing Covid-19 pandemic. Organizers plan to hold the school at a later moment, still to be determined. - - - The aim of the Biennial Africal School of Fundamental Physics and Application is to build capacity to harvest, interpret, and exploit the results of current and future physics experiments and to increase proficiency in related applications. The school is based on a close interplay between theoretical, experimental, and applied physics. The participating students are selected from all over Africa. A limited number of grants are available to support the attendance of selected participants. The school also offers a workshop to train high school teachers, an outreach to motivate high school pupils and a physics conference to support a broader participation of African research faculties. The duration of the school allows for networking-interactions among the participants. Access and participation in fundamental science is an important right. Through this work, it is hoped that the community of scientists who are at the forefront of science is enhanced and diversified thus fulfilling the mission of international research and education. Main topics: 1. Nuclear and Particle Physics; 2. Astrophysics and Cosmology; 3. Accelerators, Radiation and Medical Physics; 4. Material Physics; 5. High Performance Computing; 6. Physics Education; 7. Physics Communciation; 8. Renewable Energies and Energy Efficiency; 9. Quantum Information There will be lectures / talks in theory and experiment in the above fields, some of which are applied physics, and hands-on exercises on computing-related aspects. For full information please visit https://www.africanschoolofphysics.org/asp2020/ DEADLINE FOR APPLICATION IS OVER * * * IMPORTANTE NOTICE: SCAM ALERT! ICTP has been reported cases of unsolicited phone calls from a travel agency pretending to make hotel reservations on behalf of its activitiesl: Please do NOT disclose any sensitive information, it is a fraudulent attempt to collect credit card data! No agency has been delegated to take care of accomodation arrangements for this activity, and communications on this matter will occur through official channels only. In case of any doubt, or should you receive any similar request, please contact the local organization or ICTP Secretariat at smr3458@ictp.it Marrakesh - Morocco ICTP pio@ictp.it

Activity

6 Jul 2020 - 24 Jul 2020

@ Marrakesh - Morocco

High Energy Cosmology and Astroparticle Physics

6th Biennial African School of Fundamental Physics and Applications * POSTPONED * | (smr 3458)

Address: Cadi Ayyad University

Secretary: Nicoletta Ivanissevich

Organizer(s): Kétévi Adiklè Assamagan (BNL), Anne E. Dabrowski (CERN), Christine Darve (ESS, Lund), Jonathan R. Ellis (King's College London), Fernando Ferroni (GSSI-INFN), Steve Guy Muanza (CNRS-IN2P3, Marseille), ICTP Scientific Contact: Bobby Samir Acharya

**DEADLINE: 15/01/2020**

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJcqf-irqzouGtR1bB341hOP5kNGy22z8LLr After registration, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it

Seminar

7 Jul 2020

@ Zoom Meeting

Cosmology

Structure formation and challenges of LCDM from Galactic to Cosmological scales

Speaker(s): Shant Baghram (Sharif University of Technology, Iran)

Abstract. The standard model of cosmology, known as LCDM, has a great success in interpretation of the cosmological observations from cosmic microwave background (CMB) radiation to the large scale structure (LSS) observation. However, there are a couple of tensions between the observations and theory. One category of these challenges is in the galactic scale known as "core-cusp", "missing satellite" and "too big too fail" problems. On the other hand, the measurement of the Hubble parameter from CMB and nearby supernovae are in tension. In this talk, I will present the idea of how the non-linear structure formation and the characteristics of the cosmic web can be used to study these tensions and their probable solutions in more detail. Accordingly, I will introduce the non-Markov version of the excursion set theory as an analytical approach to study the non-linear structures, and then I will show how the idea of the modified initial condition can address the galactic scale challenges of the LCDM. In the next part of the talk I will show, how the Hubble parameter tension can be related to the structure formation history and the merger rate of dark matter halos, which can be considered as a complementary observation to study the tension and its observational consequences in LSS.

Seminar Start Time: 14:30

Europe/Rome Due to a technical hitch, we regret that this ICTP Colloquium has had to be postponed to later in the summer. We apologize for any inconvenience caused to those waiting online. ICTP Scott Aaronson is David J. Bruton Centennial Professor of Computer Science at the University of Texas at Austin. He received his bachelor's from Cornell University and his PhD from UC Berkeley. Before coming to UT Austin, he spent nine years as a professor in Electrical Engineering and Computer Science at MIT. Aaronson's research in theoretical computer science has focused mainly on the capabilities and limits of quantum computers. His first book, Quantum Computing Since Democritus, was published in 2013 by Cambridge University Press. He received the National Science Foundation’s Alan T. Waterman Award, the United States PECASE Award, and the Tomassoni-Chisesi Prize in Physics. Abstract: Last fall, a team at Google announced the first-ever demonstration of "quantum computational supremacy" - that is, a clear quantum speedup over a classical computer for some task - using a 53-qubit programmable superconducting chip called Sycamore. Google's accomplishment drew on a decade of research in my field of quantum complexity theory. This talk will discuss questions like: what exactly was the (contrived) problem that Sycamore solved? How does one verify the outputs using a classical computer? And how confident are we that the problem is classically hard - especially in light of subsequent counterclaims by IBM and others? I'll end with a possible application for Google's experiment - namely, the generation of trusted public random bits, for use (for example) in cryptocurrencies - that I've been developing and that Google and NIST are now working to test. This event is an initiative of the Trieste Institute for the Theory of Quantum Technologies (TQT). TQT was established in 2019 in collaboration with SISSA and the University of Trieste as an international centre of excellence promoting research in the field of quantum technologies, serving as a catalyst for theoretical activities not only in Italy, but also in neighbouring and developing countries. TQT is hosted on the ICTP Campus. More information is available at: https://www.ictp.it/about-ictp/media-centre/news/2019/3/tqt-pre-launch.aspx. The talk will be available on livestream via the ICTP website, and also on ICTP's YouTube channel. Pre-registration is required at the following Zoom ID: https://zoom.us/webinar/register/WN_RITne_8aRxK85EsQHAsQLQ. After registering, you will receive a confirmation email with the link. Zoom ICTP pio@ictp.it

Colloquium

8 Jul 2020

@ Zoom

ICTP Colloquium by Prof. Scott Aaronson on "Quantum Computational Supremacy and its Applications" RESCHEDULED TO 29 JULY 2020 @ 16.00 hrs CET/Trieste

Speaker(s): Prof. Scott Aaronson, University of Texas at Austin, USA

Colloquium Start Time: 16:00

Seminar

9 Jul 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar: Sampling, tilings, and quasicrystals

Speaker(s): Jorge Antezana (Universidad Nacional De La Plata)

Seminar Start Time: 15:00

Hosted Activity

10 Jul 2020 - 13 Jul 2020

@ Trieste - Italy

TWAS-AAAS Summer Workshop on Science Diplomacy. | (smr H621)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Organizer(s): TWAS,

Europe/Rome *** POSTPONED to 2023 *** Note: ICTP has suspended all educational activities from 24 February up to 26 June as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx ICTP-EAIFR DSU2020 web page: https://eaifr.org/events/dsu-2020/ The Dark Side of the Universe (DSU) is a series of international workshops in cosmology and astro-particle physics. The workshops bring together a wide range of theorists and experimentalists to discuss current ideas on models of the dark sector of the Universe, and relate them to ongoing and future experiments. The 16th event of the series will be hosted by ICTP-EAIFR in Kigali, Rwanda from 13 to 17 July 2020. Topics covered include: dark matter dark energy cosmic rays neutrino physics large-scale structure black holes gravitational waves physics beyond the standard model Speakers include: Yacine Ali-Haïmoud (NYU, USA) Francesca Calore (LAPTH, France) Kiwoon Choi (CTPU-IBS, South Korea) Basudeb Dasgupta (TIFR Mumbai, India) Ruth Durrer (Geneva, Switzerland) Silvia Galli (IAP Paris, France) Joerg Jaeckel (Heidelberg, Germany) Shaaban Khalil (Cairo, Egypt) Eiichiro Komatsu (MPA, Germany) Manuel Meyer (Erlangen, Germany) Chiara Mingarelli (U. Connecticut & Flatiron Institute, USA) Shinji Mukohyama (YITP, Japan) Ajith Parameswaram (ICTS Bangalore, India) Mario Santos (U. of the Western Cape, South Africa) Ignacy Sawicki (CEICO, Czech Republic) Leonardo Senatore (Stanford, USA) Ravi Sheth (UPenn, USA) Thomas Schwetz-Mangold (KIT Karlsruhe, Germany) Piero Ullio (SISSA, Italy) Mark Vogelsberger (MIT, USA) Steering Committee members: Csaba Balazs (Monash U., Australia) Genevieve Belanger (LAPTh-CNRS, France) Kiwoon Choi (CTPU-IBS, South Korea) David Delepine (Guanajuato U., Mexico) Peter Dunsby (Cape Town U., South Africa) Christiane Frigerio Martins (U. de São Paulo, Brazil) Joern Kersten (Bergen U., Norway) Shaaban Khalil (Zewail City of Science and Technology, Egypt) Pyungwon Ko (KIAS, South Korea) Daniel Lopez-Fogliani (U. of Buenos Aires) Yann Mambrini (LPT CNRS-Univ Paris Sud 11, France) Carlos Muñoz (IFT UAM-CSIC, Spain) Keith Olive (Minnesota U., USA) Paolo Salucci (SISSA, Italy) Qaisar Shafi (Delaware U., USA) Fumihiro Takayama (YITP, Japan) Yu-Feng Zhou (KITPC/ITP-CAS, China) PLEASE NOTE that most fields in the APPLICATION FORM are optional. Junior researchers and those requesting financial support are encouraged to provide more detailed information. Kigali - Rwanda ICTP pio@ictp.it

Activity

13 Jul 2020 - 17 Jul 2020

@ Kigali - Rwanda

High Energy Cosmology and Astroparticle Physics

DSU2020 (The Dark Side of the Universe) * POSTPONED * | (smr 3452)

Secretary: Nadia van Buuren

Organizer(s): Joern Kersten (Bergen U., Norway), Roy Maartens (UWC, South Africa & Portsmouth, UK), Shoaib Munir (ICTP-EAIFR, Rwanda), Marcello Musso (ICTP-EAIFR, Rwanda), Riccardo Sturani (IIP, Brazil), Filippo Vernizzi (IPhT Saclay, France), Gabrijela Zaharijas (Nova Gorica U., Slovenia), ICTP Scientific Contact: Paolo Creminelli

Support E-Mail: smr3452@ictp.it

**DEADLINE: 13/04/2020**

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 26 June as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx This is a comprehensive workshop reviewing state-of-the-art reactor design concepts, nuclear fuel cycle options including design and technological features of various innovative reactors. The unique course provides basic understanding of different innovative nuclear energy systems. The participants will receive a theoretical foundation on most important research and technology development areas of the innovative nuclear energy systems and will get familiarized with the modern physical models and simulation codes for the design and safety analysis of the advanced nuclear reactors and related fuel cycles. The workshop aims to engage and stimulate young scientists, researchers, and engineers currently involved in nuclear reactors research, as well as students interested in the field. Active discussion, group activities, poster session and various blended learning approaches will be used to enhance sharing of new ideas and emphasize the need of continued R&D and innovation in all areas of nuclear reactor and fuel cycle science and technology development. Topics: Global scenarios for nuclear energy; Innovative reactor concepts and fuel cycle options; Reactor physics of innovative nuclear energy systems; Thermal hydraulics of innovative nuclear energy systems; Status of advanced primary components and development and qualification of structural materials, coolants, and fuels; Passive safety systems and other safety technologies; Safety analysis including severe accident scenarios; Advanced reactor modelling and simulation; and Status of research and technology development in support of innovative reactor and fuel cycle technologies. Call for Contributed Abstracts: In the application form, all applicants are requested to submit a brief abstract for a poster presentation. A limited number of contributed abstracts will be selected for the poster session. Please note that the participants presenting poster will be given priority to attend the workshop. The best poster will be awarded a certificate of appreciation. Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries, and to those submitting abstract for poster presentation. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

13 Jul 2020 - 17 Jul 2020

@ ICTP

Joint ICTP/IAEA Workshop on Physics and Technology of InnovativeNuclear Energy Systems * CANCELLED * | (smr 3461)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Chirayu Batra (IAEA), Vladimir Kriventsev (IAEA), Local Organiser: Nicola Seriani

Cosponsor(s): International Atomic Energy Agencyiaea3

Support E-Mail: smr3461@ictp.it

**DEADLINE: 15/04/2020**

Europe/Rome Note: ICTP has suspended all educational activities from 24 February as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx The Advanced School ‘Frontiers of Nanomechanics’ will introduce the fundamental concepts of nano- and optomechanical systems and describe the key ideas behind future potential technologies. The school will consist of eight lecture series (two times one hour) delivered by international experts. These lecture series reflect the fields which currently attract the highest scientific interest and/or application potential and cover landmark implementations of nanomechanical systems. They also represent a good balance between experimental and theory perspectives, fundamental recurrent topics and modern topics which only developed in the last couple of years, as well as between classical and quantum mechanical aspects of nanomechanics. The lecture series will be complemented by practical, hands-on mini-project sessions supervised by the lecturers. The results of the mini-projects which will be presented at the end of the school. Lecture Topics: Introduction to nanomechanics (Andrew Cleland, University of Chicago, USA) Nanomechanical resonators coupled to spins (Ania Jayich, University of California in Santa Barbara, USA) Nonlinear dynamics of nanomechanical systems (Mark Dykman, Michigan State University, USA) Topological mechanics (Sebastian Huber, ETH Zurich, Switzerland) Basics of quantum cavity optomechanics (Aashish Clerk, University of Chicago, USA) Optomechanical crystals and quantum cavity optomechanics experiments (Amir Safavi-Naeini, Stanford University, USA) Quantized phonons and superconducting qubits (Yiwen Chu, ETH Zurich, Switzerland) Non-Hermitean scenarios in nanomechanical systems (Jack Harris, Yale University, USA) Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

13 Jul 2020 - 17 Jul 2020

@ ICTP

Condensed Matter and Statistical Physics

Frontiers of Nanomechanics * CANCELLED * | (smr 3460)

Address: via Grignano. 9 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Yaroslav Blanter (Delft University of Technology), Florian Marquardt (Max Planck Institute for the Science of Light), Eva Weig (University of Konstanz), Local Organiser: Mikhail Kiselev

Support E-Mail: smr3460@ictp.it

**DEADLINE: 30/04/2020**

Europe/Rome I will discuss the results contained in https://arxiv.org/abs/1909.07381 on how the entanglement spectrum of a region made by adjacent constituents in a one-dimensional quantum system becomes universal after quenches at the critical point or across it. Virtual ICTP pio@ictp.it

Seminar

14 Jul 2020

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Statistical Physics): Signatures of Universality Out of Equilibrium

Room: Registration at: https://zoom.us/meeting/register/tJYtdeGpqT4iEtX53-tSXj0m_Iif-37XNMUJ

Speaker(s): Luca Tagliacozzo (ICCUB, Universitat de Barcelona, Spain)

Seminar Start Time: 11:00

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJcsf-CgqjIoH9bdXAizv-ocxRjIxYjmguDT After registration, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it

Seminar

14 Jul 2020

@ Zoom Meeting

Phenomenology of Particle Physics

Neutrinos from the cosmic noon

Speaker(s): Vikram Rentala (IITB)

Abstract. Multiple astrophysical probes of the cosmic star formation history yield widely different inferences of this rate at redshifts z > 1. While all probes seem to indicate a period of peak star formation known as the cosmic noon between 1.5 < z < 3, the detailed inferences from these probes are in disagreement. In particular, the magnitude of the peak star formation rate density indicated by H-alpha data is higher by a factor of ~ 4 compared to the magnitude of the peak indicated by UV/IR data. We will explore the potential of future measurements of the diffuse supernova neutrino background at the Hyper-Kamiokande (HK) experiment to resolve the discrepancy and help pin down the magnitude of the peak cosmic star formation rate.

Seminar Start Time: 14:30

Europe/Rome Join Zoom Meeting https://zoom.us/j/475819702 Meeting ID: 475-819-702 If you haven't registered for previous QLS webinars, please contact qls@ictp.it to obtain the PASSWORD for this zoom meeting. Abstract: Stochastic thermodynamics has derived various bounds on work and entropy production (EP) that apply to a broad class of nonequilibrium processes. These bounds are typically achievable under idealized conditions, such as when arbitrary driving protocols can be employed. We derive bounds on the maximal extractable work and minimal EP which hold when there are constraints on the available driving protocols, including constraints on symmetries, modularity, and coarse-graining of the driving protocols. We also show that our approach can be used to decompose information acquired in a measurement of a system into "useful information" (which can be used to extract work from the system) and “useless information” (which cannot be used to extract work from the system). ICTP pio@ictp.it

Seminar

14 Jul 2020

Quantitative Life Sciences

Entropy production, work, and thermodynamics of information under protocol constraints

Speaker(s): Artemy Kolchinsky - Santa Fe Institute

Support E-Mail: qls@ictp.it

Seminar Start Time: 16:30

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJctduurpzktH9zpfrBLZX5TFSMMu3ht2T0R* After registration, you will receive a confirmation email containing information about how to join the meeting. Abstract: Tropical Geometry is said to be the combinatorial shadow of algebraic geometry, where algebraic varieties are replaced by combinatorial objects, whose combinatorial properties reflect the geometric properties of algebraic varieties. In this talk we intend to give an elementary introduction, with emphasis on plane tropical curves which are piecewise linear graphs on the the real plane, with applications in enumerative geometry of curves. Zoom Meeting ICTP pio@ictp.it

Seminar

15 Jul 2020

@ Zoom Meeting

Mathematics

Basic Notions Seminar on Tropical Geometry

Speaker: Lothar Goettsche (ICTP)

Seminar Start Time: 16:00

Europe/Rome Christopher Jarzynski received his bachelor’s degree from Princeton University (1987) and his PhD from the University of California, Berkeley (1994), both in Physics. After a postdoctoral fellowship at the Institute for Nuclear Theory in Seattle, he spent ten years in the Theoretical Division at Los Alamos National Laboratory. In 2006 he moved to the University of Maryland, College Park, where he is a Distinguished University Professor with appointments in the Department of Chemistry and Biochemistry, the Institute for Physical Science and Technology, and the Department of Physics. Jarzynski’s research interests include theoretical and computational work at the interface of physics, chemistry and biology, with a particular focus on nonequilibrium phenomena and the application of thermodynamic principles to microscopic systems. In 1996 he derived an equality that relates irreversible work to equilibrium free energy differences, which has been verified in numerous experiments over the past two decades. His recent research focus includes quantum control and thermodynamics, the thermodynamic arrow of time, and the physical implications of information processing. His has received the Sackler Prize in the Physical Sciences (2005), the Lars Onsager Prize in theoretical statistical physics (2019), and a Guggenheim Fellowship (2020), among other awards. He is a Fellow of the American Physical Society and an elected member of the American Academy of Arts and Sciences and the US National Academy of Sciences. Abstract: Thermodynamics provides a robust conceptual framework and set of laws that govern the exchange of energy and matter. Although these laws were originally articulated for macroscopic objects, nanoscale systems also exhibit “thermodynamic¬-like” behavior – for instance, biomolecular motors convert chemical fuel into mechanical work, and single molecules exhibit hysteresis when manipulated using optical tweezers. To what extent can the laws of thermodynamics be scaled down to apply to individual microscopic systems, and what new features emerge at the nanoscale? I will describe some of the challenges and recent progress – both theoretical and experimental – associated with addressing these questions. Along the way, my talk will touch on non-equilibrium fluctuations, “violations” of the second law, the thermodynamic arrow of time, nanoscale feedback control, strong system-environment coupling, and quantum thermodynamics. Pre-registration is required for this Joint ICTP-SISSA Colloquium. The Zoom ID is as follows: https://zoom.us/webinar/register/WN_yBQjSF0VQIGYd_pir7Pfuw The talk will be livestreamed from the ICTP website and available on ICTP's YouTube Channel too. All are welcome to attend. Zoom ICTP pio@ictp.it

Colloquium

15 Jul 2020

@ Zoom

ICTP-SISSA Colloquium by Prof. Chris Jarzynski on "Scaling Down the Laws of Thermodynamics"

Speaker(s): Prof. Christopher Jarzynski, University of Maryland, USA

Colloquium Start Time: 16:00

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJwrcu6hrjwvGd3rxgA4UpjhJI5Cpd8v-XZs After registration, you will receive a confirmation email containing information about joining the meeting Abstract: In the first part of this lecture, we talk about compact stable CMC surfaces with free boundary in compact convex domains of the Euclidean three-space. We prove that every compact stable CMC surface with free boundary in a convex domain with boundary geometry sufficiently close to the round two-sphere is topologically a disk or an annulus. This fact, together with a previous one due to Ros and Vergasta, implies a complete classification of these surfaces in the unit Euclidean three-ball. In the last part of the lecture, we deal with a characterization of the equatorial disk and the critical catenoid in the unit Euclidean three-ball based on a pinching condition involving its second fundamental form and support function. This last part is a joint work with Lucas Ambrozio. Zoom Meeting ICTP pio@ictp.it

Seminar

16 Jul 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar: Characterization of free boundary CMC surfaces in the ball

Speaker(s): Ivaldo Nunes (Universidade Federal do Maranhão)

Seminar Start Time: 14:00

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 26 June as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx ICRA is a biannual international conference series started in 1974. It brings together well-established experts and young researchers in representation theory and in allied fields where representation theory is applied. The first week will consist of a workshop with six lecture series, including introductory talks and on topics of particular current interest, such as recent links to both topological data analysis and to mathematical physics. One of the lecture series will be devoted to the mathematical heritage of Ragnar Buchweitz. The second week will be a conference with invited speakers in addition to contributed talks, both in plenary and in parallel sessions. Topics: Representation theory of algebras and its applications, including: -Topological Data Analysis -Cluster algebras -Non-commutative algebraic geometry -Modular representation theory. Workshop Speakers : M. BOTNAN, Amsterdam P. ETINGOF, MIT S. FOMIN, Michigan S. IYENGAR, Utah B. KELLER, Paris 7 S. SCHROLL, Leicester Conference Speakers: P. BALMER, UCLA A. BARBIERI, Sheffield M. CAORSI, former SISSA T. HAUSEL, IST Austria L. WILLIAMS, Harvard S. WITHERSPOON, Texas Scientific Committee: J. ASADOLLAHI, Isfahan C. GEISS, Mexico City O. IYAMA, Nagoya B. KELLER, Paris S. OPPERMANN, NTNU J. PEVTSOVA, Washington R. SCHIFFLER, Connecticut S. SCHROLL, Leicester J. TRLIFAJ, Prague M. VAN DEN BERGH, Hasselt Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is a registration fee, but this is waived for supported participants from developing countries. For further information regarding the International Conference on Representations of Algebras, ICRA 2020 Workshop and Conference please visit the following link: https://wiki.math.ntnu.no/icra2020/start Applications for both the Workshop and the Conference can be submitted at the following link: http://indico.ictp.it/event/9108/ by clicking 'Apply here' Applications for the Conference ONLY can be submitted at the following link: http://indico.ictp.it/event/9181/ by clicking 'Apply here' ICTP ICTP pio@ictp.it

Activity

21 Jul 2020 - 31 Jul 2020

@ ICTP

Mathematics

International Conference on Representations of Algebras, ICRA 2020 Workshop and Conference * CANCELLED * | (smr 3463)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: All lecture halls in LB (included Stasi) as well as in AGH; ex-SISSA Auditorium

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Lidia Angeleri Hugel (Verona), Aslak Bakke Buan (NTNU), Giovanni Cerulli Irelli (Roma), William Crawley-Boevey (Bielefeld), Henning Krause (Bielefeld), Francesca Mantese (Verona), Maria Julia Redondo (Bahia Blanca), Oeyvind Solberg (NTNU), Jie Xiao (Tsinghua), Local Organiser: Fernando Rodriguez Villegas

Cosponsor(s): Bielefeld Universityubf, Università di Verona - Dipartimento di Informaticaunivr, Norwegian University of Science and Technologyntnu, IPM-Isfahanipm3, Gruppo Nazionale per le Strutture Algebriche, Geometriche e le loro Applicazionignsaga2

Support E-Mail: smr3463@ictp.it

**DEADLINE: 15/04/2020**

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJYocuiqqjMsGNFZli7k3MCJ9n0H0i1Vo3og After registering, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it

Seminar

21 Jul 2020

@ Zoom Meeting

Strings and Higher Dimensional Theories

Scrambling in Quantum Networks

Speaker(s): Jeff Murugan (University of Cape Town)

Abstract. Many-body problems have seen a remarkable resurgence in recent years. In part, this is because the increasing overlap between high energy particle physics and theoretical condensed matter. The discovery of the SYK model and the avalanche of work that followed is testament to this state of affairs. Network theory (or graph theory) offers a powerful toolkit to study some of these systems. Among these, quantum small-worlds are quantum many-body systems that interpolate between completely ordered (nearest-neighbour, next-to-nearest-neighbour etc.) and completely random interactions. As such, they furnish a novel new laboratory to study quantum systems transitioning between regular and chaotic behaviour. In this talk, I will introduce these ideas and illustrate them in the context of the Heisenberg and Ising models, showing how to inject a small number of long-range interactions into the spin chain and study its ability to scramble quantum information using two primary devices: the out-of-time-order correlator (OTOC) and the spectral form factor (SFF). As an interesting, and perhaps timely, aside I will describe how these ideas can be related to models of viral spreading in real-world systems.

Seminar Start Time: 14:30

Europe/Rome Andrea Montanari received a Laurea degree in Physics in 1997, and a Ph. D. in Theoretical Physics in 2001 (both from Scuola Normale Superiore in Pisa, Italy). He has been post-doctoral fellow at Laboratoire de Physique Théorique de l'Ecole Normale Supérieure (LPTENS), Paris, France, and the Mathematical Sciences Research Institute, Berkeley, USA. Since 2002 he is Chargé de Recherche (with Centre National de la Recherche Scientifique, CNRS) at LPTENS. In September 2006 he joined Stanford University as a faculty, and since 2015 he is Full Professor in the Departments of Electrical Engineering and Statistics. He was co-awarded the ACM SIGMETRICS best paper award in 2008. He received the CNRS bronze medal for theoretical physics in 2006, the National Science Foundation CAREER award in 2008, the Okawa Foundation Research Grant in 2013, and the Applied Probability Society Best Publication Award in 2015. He is an Information Theory Society distinguished lecturer for 2015-2016. In 2016 he received the James L. Massey Research & Teaching Award of the Information Theory Society for young scholars, and in 2017 was elevated to IEEE Fellow. In 2018 he was an invited sectional speaker at the International Congress of Mathematicians. He is an invited IMS Medallion lecturer for the 2020 Bernoulli-IMS World Congress. Abstract: The last fifteen years have witnessed dramatic breakthroughs in machine learning. This progress was crucially driven by engineering advances: greater computing power and larger availability of training data. Not only the collection of methods that emerged from this revolution are not well understood mathematically, but they actually appear to defy traditional mathematical theories of machine learning. Future developments and applications, especially within the sciences, will require to understand better the underlying mathematical principles. I will try to provide a gentle introduction to the subject, and a peek into some recent advances towards addressing these challenges. The colloquium will be via Zoom. Pre-registration is required at the following Zoom link: https://zoom.us/webinar/register/WN_YK6VZDvDT3WdBljtsqhHWQ. You will then receive a confirmation email. The colloquium will be livestreamed from the ICTP website. All are welcome to join. Zoom ICTP pio@ictp.it

Colloquium

22 Jul 2020

@ Zoom

ICTP-SISSA Colloquium by Prof. Andrea Montanari, Stanford University, USA on "What is Machine Learning, And What We Don't Understand About It"

Speaker(s): Prof. Andrea Montanari, Stanford University, USA

Colloquium Start Time: 16:00

Europe/Rome Virtual Consultation on Open Science Information about this online meeting and registration can be found on the UNESCO web page: https://en.unesco.org/science-sustainable-future/open-science/regional-consultations/western-european-north-america Agenda Introduction to the UNESCO Recommendation on Open Science Panel discussion on Open Science in Europe and North America: Key Challenges and Opportunities Open discussion on Key messages from Europe and North America for the UNESCO Recommendation on Open Science Co-Organizers Division of Science Policy and Capacity-Building, Natural Sciences Sector, UNESCO UNESCO category 1 center, the Abdus Salam International Centre for Theoretical Physics (ICTP) UNESCO affiliated TWAS, The World Academy of Sciences for the advancement of science in developing countries Draft Structure Participants will be provided with the necessary background documents before the meeting and will be invited to submit their written inputs before, during and after the online meeting. A summary of inputs submitted before the meeting will be shared with the invited participants before the meeting. This will form the basis for the online discussion. Consolidation of inputs after the online session The draft report of the meeting will be shared with the participants after the online discussion. Participants will be invited to provide further written inputs on the draft report within one week. The final report will be posted on UNESCO Open Science website. The inputs from the meeting will subsequently be incorporated in the draft text of the UNESCO Recommendation on Open Science. The outcomes of the consultations will also be presented in the context of ESOF in September 2020. This meeting is a satellite event of ESOF 2020 (https://www.esof.eu/en/) and is organized in collaboration with EuroDIG. Online - ICTP pio@ictp.it

Activity

23 Jul 2020

@ Online -

New Research Areas (Physics and Development)

UNESCO Regional Consultation on Open Science for Western Europe and North America | (smr 3513)

Room: Online

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Ana Persic (UNESCO), Local Organiser: Marco Zennaro

Support E-Mail: smr3513@ictp.it

**DEADLINE: 17/07/2020**

Europe/Rome http://www.mymc.it/2020/mymc-2020.html MYMC 2020 is promoted by: MUR - Ministero dell'Università e della Ricerca INdAM - Istituto Nazionale di Alta Matematica UMI - Unione Matematica Italiana ICTP - Abdus Salam International Centre for Theoretical Physics UNINT- Università degli Studi Internazionali di Roma PLS - Piano nazionale Lauree Scientifiche Sapienza Università di Roma Università degli Studi Roma Tre Università degli Studi di Roma "Tor Vergata" Scientific Committee: Maria Letizia Melina (Chair), Direttore Generale – Ministero dell’Università e della Ricerca (MUR) Federico Cinquepalmi (Vice-Chair), MUR, Dirigente Ufficio internazionalizzazione della formazione superiore Claudio Arezzo, ICTP (International Centre for Theoretical Physics, Trieste), Head of Mathematics Group Claudio Bernardi, Sapienza Università di Roma Luca Biasco, Università degli Studi Roma Tre Giandomenico Boffi, Università degli Studi Internazionali di Roma, Direttore del Laboratorio di Scienze Matematiche Piermarco Cannarsa, Unione Matematica Italiana, Presidente Corrado Falcolini, Università degli Studi Roma Tre Claudia Malvenuto, Sapienza Università di Roma Mirko Maracci, Piano Lauree Scientifiche, Coordinatore nazionale del progetto per la Matematica Roberto Natalini, Istituto per le Applicazioni del Calcolo “M. Picone” (CNR), Direttore Giorgio Patrizio, Istituto Nazionale di Alta Matematica, Presidente Ludovico Pernazza, Commissione Olimpiadi di Matematica, Presidente Carlo Sbordone, Accademia Pontaniana, Tesoriere Francesca Tovena, Università degli Studi di Roma “Tor Vergata” Rome - Italy ICTP pio@ictp.it

Activity

23 Jul 2020 - 24 Jul 2020

@ Rome - Italy

Mediterranean Youth Mathematical Championship * CANCELLED * | (smr 3505)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Secretary: Koutou Mabilo

Organizer(s): Giorgio Patrizio (INDAM), Giandomenico Boffi (Università degli Studi Internazionali di Roma), Federico Cinquepalmi (MIUR), ICTP Scientific Contact: Claudio Arezzo

http://www.mymc.it/2020/mymc-2020.html

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJctf-qhpj4jHNa323WjE45SVMzgyiCoJcb4 After registration, you will receive a confirmation email containing information about joining the meeting Abstract: I will discuss (known and unknown) lower and upper bounds for the number of positive solutions of systems of n sparse polynomials in n variables. Zoom Meeting ICTP pio@ictp.it

Seminar

23 Jul 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar "Positive solutions of sparse polynomial systems"

Speaker(s): Alicia Dickenstein, UBA, Argentina

Seminar Start Time: 14:00

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 26 June as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx ICRA is a biannual international conference series started in 1974. It brings together well-established experts and young researchers in representation theory and in allied fields where representation theory is applied. The first week will consist of a workshop with six lecture series, including introductory talks and on topics of particular current interest, such as recent links to both topological data analysis and to mathematical physics. One of the lecture series will be devoted to the mathematical heritage of Ragnar Buchweitz. The second week will be a conference with invited speakers in addition to contributed talks, both in plenary and in parallel sessions. Topics: Representation theory of algebras and its applications, including: -Topological Data Analysis -Cluster algebras -Non-commutative algebraic geometry -Modular representation theory. Workshop Speakers : M. BOTNAN, Amsterdam P. ETINGOF, MIT S. FOMIN, Michigan S. IYENGAR, Utah B. KELLER, Paris 7 S. SCHROLL, Leicester Conference Speakers: P. BALMER, UCLA A. BARBIERI, Sheffield M. CAORSI, former SISSA T. HAUSEL, IST Austria L. WILLIAMS, Harvard S. WITHERSPOON, Texas Scientific Committee: J. ASADOLLAHI, Isfahan C. GEISS, Mexico City O. IYAMA, Nagoya B. KELLER, Paris S. OPPERMANN, NTNU J. PEVTSOVA, Washington R. SCHIFFLER, Connecticut S. SCHROLL, Leicester J. TRLIFAJ, Prague M. VAN DEN BERGH, Hasselt Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is a registration fee, but this is waived for supported participants from developing countries. For further information regarding the International Conference on Representations of Algebras, ICRA 2020 Workshop and Conference please visit the following link: https://wiki.math.ntnu.no/icra2020/start Applications for both the Workshop and the Conference can be submitted at the following link: http://indico.ictp.it/event/9108/ by clicking 'Apply here' Applications for the Conference ONLY can be submitted at the following link: http://indico.ictp.it/event/9181/ by clicking 'Apply here' ICTP ICTP pio@ictp.it

Activity

27 Jul 2020 - 31 Jul 2020

@ ICTP

Mathematics

International Conference on Representations of Algebras, ICRA 2020 Conference * CANCELLED * | (smr 3502)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: All lecture halls in LB (included Stasi) as well as in AGH; ex-SISSA Auditorium

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Support E-Mail: smr3463@ictp.it

**DEADLINE: 15/04/2020**

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJctfu2gqDsrHtSwn3SVc_y_OPr4CoiDLLGN After registering, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it

Seminar

28 Jul 2020

@ Zoom Meeting

Phenomenology of Particle Physics

Constraining Dark Matter-Neutrino Interactions

Speaker(s): Reinard Primulando (Parahyangan Catholic University, Bandung, Indonesia)

Abstract. In this talk, I will discuss constraints on the interaction of the dark matter (DM) with the neutrinos, assuming that the DM does not couple with other standard model particles. The focus of this talk is to put some bounds on the interaction from the collider perspective, while the bounds from neutrino telescopes are also discussed for comparison. In the context of simplified models, I will show that the collider searches can be competitive with the bounds from neutrino telescopes for some parts of parameter space. Moreover I will also present the reach of future colliders in constraining DM-neutrino interaction.

Seminar Start Time: 14:30

Europe/Rome Join Zoom Meeting https://zoom.us/j/475819702 Meeting ID: 475-819-702 If you haven't registered for previous QLS webinars, please contact qls@ictp.it to obtain the PASSWORD for this zoom meeting. Active processes are critical to maintain the proper function of all living cells. A large class of active processes is driven by molecular motors that transduce chemical energy into mechanical work. To understand their force-dependent dynamics, precise measurements with optical traps have been established. Because of the stochastic nature of the dynamics, interpretation of the experimental data is not straightforward. We recently introduced a quantitative framework to analyze experimental data and to extract biophysical relevant quantities. We apply this method to data from human dynein to predict the maximal force it can generate. To further understand the physical mechanisms underlying biological processes, we investigate the role of molecular motors in large-scale simulations. We integrate single motor behavior into such simulations to study force production during T-cell activation. Zoom Meeting ICTP pio@ictp.it

Seminar

28 Jul 2020

@ Zoom Meeting

Quantitative Life Sciences

Active Processes in Biology driven by Molecular Motors

Speaker(s): Florian Berger - Division of Cell Biology, Neurobiology, and Biophysics, Utrecht University, The Netherlands

Support E-Mail: qls@ictp.it

Seminar Start Time: 15:00

Europe/Rome The goal of this 3-day informal workshop is to explore and develop interdisciplinary synergies involving physicists, chemists, biologists, and engineers working at the boundary between atomistic simulations, soft matter physics, physical chemistry and stochastic thermodynamics in watery environments. Topics: Molecular Dynamics Simulations Soft Matter Biophysics Stochastic Thermodynamics Heat Transport in Nanotechnology Statistical Physics and Collective Behavior Speakers: R. EJTEHADI, Sharif University, Iran J.P. ESGUERRA, University of Phillipines Diliman, Philippines D.D. HARTMANN, Université Marien NGouabi, Republic of the Congo A. HASSANALI, ICTP, Italy A. JELIC, ICTP, Italy A. NAJI, IPM, Iran A. RAJABPOUR, IKIU and IPM, Iran R.A. RICA ALARCÓN, Universidad de Granada, Spain E. ROLDAN, ICTP, Italy E. RUFEIL, Universidad Nacional de Cordoba, Argentina Online - ICTP pio@ictp.it

Activity

29 Jul 2020 - 31 Jul 2020

@ Online -

Condensed Matter and Statistical Physics , Quantitative Life Sciences

Joint QLS-CMSP Virtual Summer Retreat on Heat, Water, Noise, and Life | (smr 3550)

Room: Online

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Ali Rajabpour (IPM), Local Organiser: Ali Hassanali, Edgar Roldan

Support E-Mail: smr3550@ictp.it

**DEADLINE: 20/07/2020**

Europe/Rome Scott Aaronson is David J. Bruton Centennial Professor of Computer Science at the University of Texas at Austin. He received his bachelor's from Cornell University and his PhD from UC Berkeley. Before coming to UT Austin, he spent nine years as a professor in Electrical Engineering and Computer Science at MIT. Aaronson's research in theoretical computer science has focused mainly on the capabilities and limits of quantum computers. His first book, Quantum Computing Since Democritus, was published in 2013 by Cambridge University Press. He received the National Science Foundation’s Alan T. Waterman Award, the United States PECASE Award, and the Tomassoni-Chisesi Prize in Physics. Abstract: Last fall, a team at Google announced the first-ever demonstration of "quantum computational supremacy" - that is, a clear quantum speedup over a classical computer for some task - using a 53-qubit programmable superconducting chip called Sycamore. Google's accomplishment drew on a decade of research in my field of quantum complexity theory. This talk will discuss questions like: what exactly was the (contrived) problem that Sycamore solved? How does one verify the outputs using a classical computer? And how confident are we that the problem is classically hard - especially in light of subsequent counterclaims by IBM and others? I'll end with a possible application for Google's experiment - namely, the generation of trusted public random bits, for use (for example) in cryptocurrencies - that I've been developing and that Google and NIST are now working to test. This event is an initiative of the Trieste Institute for the Theory of Quantum Technologies (TQT). TQT was established in 2019 in collaboration with SISSA and the University of Trieste as an international centre of excellence promoting research in the field of quantum technologies, serving as a catalyst for theoretical activities not only in Italy, but also in neighbouring and developing countries. TQT is hosted on the ICTP Campus. More information is available at: https://www.ictp.it/about-ictp/media-centre/news/2019/3/tqt-pre-launch.aspx. The talk will be available on livestream via the ICTP website, and also on ICTP's YouTube channel. Pre-registration is required. Please register at: https://zoom.us/webinar/register/WN_RITne_8aRxK85EsQHAsQLQ After registering, you will receive a confirmation email with the link. Zoom ICTP pio@ictp.it

Colloquium

29 Jul 2020

@ Zoom

ICTP Colloquium by Prof. Scott Aaronson on "Quantum Computational Supremacy and its Applications" (New date)

Speaker(s): Prof. Scott Aaronson, University of Texas at Austin, USA

Colloquium Start Time: 16:00

Europe/Rome As the world becomes increasingly connected both virtually and physically, aspects of human societies behave more and more like evolved natural systems such as microbial communities and the brain network. Exploration of similarities and differences between them could offer novel insights and understanding that benefit mankind. Both data-driven modelling in the AI community and hypothesis-driven modelling in statistical physics can play important and complementary roles in tackling the hugely complex dynamics and behavior exhibited by these systems. The workshop aims at showcasing some of the successful research outcomes in this rapidly expanding interdisciplinary field, and promoting exchange of ideas and methodologies particularly among the young researchers. Topics: Social network dynamics (epidemiology, crowdsourcing, opinion dynamics) Statistical mechanics in Data Science (algorithmic phase transitions, spin glasses, compressive sensing) Systems Biology (statistical laws in microbiomes, biological networks) Systems Neuroscience (connectomics, avalanche dynamics, grid cells) Speakers: J. BARBIER, ICTP, ITALY A. BASHAN, BAR-ILAN UNIVERSITY, ISRAEL L. DAI, SIAT/CAS SHENZHEN, CHINA A. MUKHERJEE, IIT KHARAGOUR, INDIA W. QUATTROCIOCCHI, UNIVERSITY OF VENICE, ITALY A. TREVES, SISSA, ITALY C. WANG, INST. AUTOMATION/CAS, CHINA X.-K. XU, DALIAN MINZU UNIVERSITY, CHINA Z. XU, SHANGHAI JIAOTONG UNIVERSITY, CHINA Y. YU, FUDAN UNIVERSITY, CHINA C. ZHOU, HK BAPTIST UNIVERSITY, CHINA Online Broadcast： https://live.bilibili.com/6782735 Online - ICTP pio@ictp.it

Activity

30 Jul 2020 - 31 Jul 2020

@ Online -

Quantitative Life Sciences

CSRC-ICTP Joint Workshop on Big Data, Machine Learning and Complexity Research | (smr 3553)

Room: Online

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Linyuan Lv (UESTC/CSRC Beijing), Lei-Han Tang (CSRC Beijing/HK Baptist Univ.), Liang Tian (HK Baptist Univ.), Changsong Zhou (HK Baptist Univ.), Haijun Zhou (ITP/CAS Beijing), Jean Barbier (ICTP), Antonio Celani (ICTP), Jacopo Grilli (ICTP), Local Organiser: Matteo Marsili

Support E-Mail: smr3553@ictp.it

**DEADLINE: 27/07/2020**

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJwrcu6hrjwvGd3rxgA4UpjhJI5Cpd8v-XZs After registration, you will receive a confirmation email containing information about joining the meeting. Abstract: Holomorphic correspondences are polynomial relations P(z,w)=0, which can be regarded as multi-valued self-maps of the Riemann sphere(implicit maps sending z to w). The iteration of such multi-valued map generates a dynamical system on the Riemann sphere (dynamical system which generalise rational maps and finitely generated Kleinian groups). We consider a specific 1-(complex)parameter family of (2:2) correspondences F_a (introduced by S. Bullett and C. Penrose in 1994), which we describe dynamically. In particular, we show that for every a in the connectedness locus M_{\Gamma}, this family is a mating between the modular group and rational maps in the family Per_1(1), and we develop for this family a complete dynamical theory which parallels the Douady-Hubbard theory of quadratic polynomials. This is joint work with S. Bullett. Zoom Meeting ICTP pio@ictp.it

Seminar

30 Jul 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar: Mating quadratic maps with the modular group

Speaker(s): Luna Lomonaco (IMPA, Rio de Janeiro)

Seminar Start Time: 16:00

Activity

31 Jul 2020 - 10 Aug 2020

@ Shaanxi - People's Republic of China

High Energy Cosmology and Astroparticle Physics

2nd International High Energy Physics School in Western China * POSTPONED * | (smr 3464)

Secretary: Nadia van Buuren

Organizer(s): Andrea Romanino (SISSA, Italy), Yongtao Zhao (XJTU, Shaanxi, China), C. -P. Yuan (MSU, USA), Tie-Jiun Hou (NEU, Liaoning, China), Sayipjamal Dulat (XJU, Xinjiang, China), Xurong Chen (IMP, Gansu, China), Nu Xu (IMP, Gansu, China), ICTP Scientific Contact: Bobby Samir Acharya

Support E-Mail: smr3464@ictp.it

Europe/Rome Note: ICTP has suspended all educational activities from 24 February as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx Update: All participants are cordially invited to attend a Special Event and Reception on Sunday, August 2 from 18:00 to 20:00. The El-Niño Southern Oscillation (ENSO) is a strong driver of significant weather and climate anomalies across the globe. ENSO is probably one of the most studied phenomena in climate research, but there are still many open research questions, which will be discussed in this school. Also ENSO teleconnections continue to be an area of very active research. They include not only effects on the circulation over the mid-latitudes (Europe, Asia, North America, South America), but also a strong influence on the Asian Monsoon. The Monsoon also has its own set of teleconnections not all of which are related to ENSO. It will be very helpful for researchers and students alike to learn the latest advances in the understanding of ENSO dynamics and its broad range of teleconnections. One emphasis of this workshop will be the Asian Monsoon, which is a complex phenomenon of great importance to the regional agriculture and hence to the well-being of a very significant population. In recent years there has been an advance in understanding of how the Monsoon is affected by, and interacts with, the tropical ocean basins, the adjoining land masses, mid-latitudes and the stratosphere. Topics: Tropical ocean (ENSO) dynamics, including phenomenology ENSO theory, modeling, prediction Decadal Variability and long term trends ENSO teleconnections Decadal variations of interannual teleconnections Inter-basin connections Tropical-extratropical teleconnections Lecturers: S. BORDONI, University of Trento M. CANE, Columbia University A. CAPOTONDI, University of Colorado and NOAA/ESRL R. CHATTOPADHYAY, Indian Institute of Tropical Meteorology A. CHERCHI, INGV E. GUILYARDI, LOCEAN/IPSL F.-F. JIN, University of Hawaii I.-S. KANG, SIO B. KIRTMAN, University of Miami M. L'HEUREUX, NOAA M. LENGAIGNE, Institut de recherce pour the developpement (IRD) M. MCPHADEN, Pacific Marine Environmental Laboratory F. MOLTENI, ECMWF A. MOURA, INPE A. SANTOSO, CSIRO E. SARACHIK, University of Washington C. WANG, Chinese Academy of Sciences A. WITTENBERG, Geophysical Fluid Dynamics Laboratory S.-P. XIE, Scripps Institution of Oceanography, UCSD Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

3 Aug 2020 - 14 Aug 2020

@ ICTP

Earth System Physics

3rd Summer School on Theory, Mechanisms and Hierarchical Modeling of Climate Dynamics: Tropical Oceans, ENSO and their Teleconnections * CANCELLED * | (smr 3485)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Budinich Lecture Hall (LB)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Antonietta Capotondi (University of Colorado and NOAA/ESRL), David Straus (George Mason University), Jagadish Shukla (George Mason University), Riccardo Farneti (ICTP), Adrian Tompkins (ICTP), Local Organiser: Fred Kucharski

Cosponsor(s): NOAA Climate Variability and Predictabilitynoaa3, NOAA Modeling, Analysis, Prediction and Projection (MAPP)noaa2, NSF Physical Oceanographynsf2, US CLIVARusclivar, CLIVARusclivar2

Support E-Mail: smr3485@ictp.it

**DEADLINE: 01/05/2020**

Europe/Rome DUE TO THE COVID19 PANDEMIC THIS SCHOOL HAS BEEN CANCELLED. --------------------- Original text purpose of the School ---------------------- This School will be held at the ICTP-East African Institute for Fundamental Research [EAIFR] in Kigali, Rwanda; it will offer students concrete and effective mathematical tools from algebra, group theory and geometry that can be applied to any scientific field. Description of Courses: Advanced linear algebra This goes beyond a first course on the subject. Topics like Jordan normal form will be studied as well as bilinear forms, multilinear forms and tensor products; Groups, Counting and FFT We start with group theory via rotations in 3d space; this will be used in Pólya counting problems. We then moves on to character theory culminating in fast Fourier transform; Introduction to Lie Algebras The course introduces Lie algebras and aims towards of the classification of semisimple Lie algebras which is widely considered one of the most elegant results in mathematics; Modular forms The course introduces modular forms. We will study many concrete examples, like the Eisenstein series, from which we will construct the finite dimensional spaces of modular forms of any weight. Kigali - Rwanda ICTP pio@ictp.it

Activity

3 Aug 2020 - 14 Aug 2020

@ Kigali - Rwanda

Mathematics

EAUMP-ICTP School: Topics in Concrete Mathematics | (smr 3465). CANCELLED

Secretary: Elizabeth Brancaccio

Organizer(s): Omololu Akin-Ojo (EAIFR - Nigeria), Celestin Kurujyibwami (U. of Rwanda), Balazs Szendroi (U. Oxford), Angela Tabiri (AIMS - Ghana), Fernando Rodriguez Villegas (ICTP - Trieste), ICTP Scientific Contact: Fernando Rodriguez Villegas

Cosponsor(s): Eastern Africa Universityeaump, The London Mathematical Societylns, Centre International de Mathématiques Pures et Appliquéescimpa, Foundation Compositio Mathematicafcm, EAIFReaifr, University of Rwandaur

**DEADLINE: 05/04/2020**

Europe/Rome The Coastal Ocean Environment Summer School in Ghana (https://coessing.org) is an international collaboration aimed at building capacity in oceanographic and environmental sciences in Ghana specifically, and Africa more generally. Marine issues of great importance to Ghana include fisheries, piracy, pollution, shipping and port management, and the recent advent of offshore oil drilling.  We held schools in 2015, 2016, 2017, 2018, 2019 and ICTP co-organized the school in 2018. We hold the school every year, alternating between Regional Maritime University and University of Ghana, which are both located in Ghana’s capital city of Accra. In 2020, for the 6th summer in a row, we will host a summer school. It will be the third school hosted at the University of Ghana. During the summer school, around 100 African participants receive a broad general training in marine and environmental sciences. At the same time, a subgroup of participants receive more specific training in their areas of interest, through conducting a short research project on specialized topics related to ocean biogeochemistry, ocean modeling, satellite oceanography, data analysis, and seagoing oceanography. The emphasis in this project track is on hands-on research rather than on lectures. Project track participants will thus have a chance to spend an entire week working closely under the guidance of the instructors, deepening their knowledge of their topic of interest, and presenting their projects on the last day of the school.  We believe that repeat visits are the key to establishing meaningful long-term connections between western and African scientists. Our long-term goals for the school include developing a research and education network of marine and environmental scientists in several African countries. Topics: • Coastal ocean dynamics • Environmental science • Oil and gas basin development • Shoreline geomorphology • Organic and isotope biogeochemistry • Satellite and field oceanography • Numerical modeling of the ocean • Data analysis techniques Speakers: Prof. E. L. Shroyer, Oregon State University, USA Prof. Adam Simon, University of Michigan, USA Prof. Aline Cotel, University of Michigan, USA Dr. Paige Martin, Columbia University, USA Prof. Andrew Lucas, Scripps Institution of Oceanography, USA Dr. Madeline Foster-Martinez, University of New Orleans, USA Dr. D. Menemenlis, Jet Propulsion Laboratory, USA Dr. E. Nyadjro, Mississippi State University, USA Dr. J. K. Ansong, University of Ghana, Legon Dr. W. Johnson, Naval Research Laboratory, USA Dr. C. Buckingham, Universite Bretagne Occidentale, France Dr. S. Howden, The University of Southern Mississippi, USA Dr. A. M. Lamptey, University of Ghana, Legon Prof. B. K. Arbic, University of Michigan, USA Dr. R. Farneti, Abdus Salam ICTP, Italy Accra - Ghana ICTP pio@ictp.it

Activity

3 Aug 2020 - 8 Aug 2020

@ Accra - Ghana

Earth System Physics

The Coastal Ocean Environment Summer School in Ghana 2020 - CANCELLED | (smr 3462)

Secretary: Susanne Henningsen

Organizer(s): Edem Mahu (University of Ghana, Legon), Brian K. Arbic (University of Michigan, USA), Sam Addo (University of Ghana, Legon), ICTP Scientific Contact: Riccardo Farneti

Cosponsor(s): Coastal Ocean Environment Summer School Ghanaghana21, University of Ghanaughana, The International Union of Geodesy and Geophysicsiugg4, National Science Foundationnsf2, University of Michiganumich

Europe/Rome Note: ICTP has suspended all educational activities from 24 February as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx In-situ radiation measurements with portable detectors is the most important tool used to discover the presence of radioactive elements in the environment, as well as to determine their hazard in a fast and non-destructive way. This workshop will allow participants to exchange experiences on using portable radiation monitors for in-situ measurements and directly compare performance of instruments under real-time conditions. Participants are encouraged to bring their own portable detectors to the training! It will enhance the skills of participants to choose best options, tools and processes for analyses, and to gather experience in different detectors and their optimal use. This will foster ability to perform adequate field measurements for environmental monitoring, decommissioning and remediation projects. Several methods for achieving the measurement results will be demonstrated. The following topics will be included in the programme: Hands-on training on use of portable detectors’ including geo-referenced measurements collected with stationary, backpack and UAV-borne systems; Comparison of performance of portable detectors, including dose rate meters, surface contamination monitors, HPGe and scintillation spectrometers and radon counters; Efficiency calibration of high-resolution gamma spectrometers for field measurements; Outlining field measurement strategies for activity concentration, dose rate and surface contamination; Data handling and interpretation for creation of maps, including interpolation based on geo-statistics. Speakers: F. ALBINET, Consultant, Guéthary, Basque country, France M. GARAVAGLIA, ARPA FVG – Direzione Tecnico Scientifica, Udine, Italy F. HAUENSTEIN, Spiez Laboratory, Switzerland M. LAVIELLE, CEA, France N. MOSIMANN, Spiez Laboratory, Switzerland R. M. RUSCONI, ARPA Lombardia, Settore Attività Produttive e Controlli, Milan, Italy J. C. SAEZ VERGARA, CIEMAT, Madrid, Spain P. SLADEK, IAEA, NSIL S. TARJAN, IAEA, TEL Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

3 Aug 2020 - 14 Aug 2020

@ ICTP

Joint ICTP/IAEA Workshop on Portable Detectors for In-situ Radiation Measurements * CANCELLED * | (smr 3466)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Euler Lecture Hall (LB)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Alexander Mauring (IAEA, TEL, NAEL), Roman Padilla Alvarez (IAEA, NSIL, NAPC), Local Organiser: Maria Liz Crespo

Cosponsor(s): International Atomic Energy Agencyiaea3

Support E-Mail: smr3466@ictp.it

**DEADLINE: 17/05/2020**

Europe/Rome Register in advance for this meeting: https://zoom.us/meeting/register/tJwrcu6hrjwvGd3rxgA4UpjhJI5Cpd8v-XZs After registering, you will receive a confirmation email containing information about joining the meeting. Abstract: In this talk we will recall the definition of the zeta function and the L-function of some geometric objects (with special emphasis on plane projective curves). We will state their expected properties and their conjectural relation with some analytic functions. At last, we will explain the third central object (namely Galois representations) and the role it plays in the previous correspondence. Zoom Meeting ICTP pio@ictp.it

Seminar

6 Aug 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar: Modularity of some geometric objects: definitions, reasons and state of the art

Speaker(s): Ariel Martin Pacetti (Cordoba/CONICET)

Seminar Start Time: 14:00

Europe/Rome Note: ICTP has suspended all educational activities from 24 February as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx This workshop will address recent developments in cutting-edge theoretical approaches to correlated electrons, identify their breakthroughs and current limitations, and coordinate a roadmap towards an accurate solution of the many-electron problem. Topics of the workshop: Fundamentals of the many-body theory Precision numerical methods Exact analytical descriptions of limiting cases Developments of unified many-body approaches Definitive solutions to many-electron systems Speakers: S. ANDERGASSEN, Eberhard Karls Universität Tübingen, Germany M. CAPONE, SISSA, Italy P. CORBOZ, University of Amsterdam, Netherlands H. G. EVERTZ, Technische Universität Graz, Austria M. FERRERO, College de France and École Polytechnique, France K. HAULE, Rutgers University, USA K. HELD, Technische Universität Wien, Austria C. HONERKAMP, RWTH Aachen University, Germany M. KATSNELSON, Radboud University Nijmegen, Netherlands J. LEBLANC, Memorial University of Newfoundland, Canada A. LICHTENSTEIN, Universität Hamburg, Germany T. MAIER, Oak Ridge National Laboratory, USA O. PARCOLLET, Flatiron Institute, USA L. POLLET, Ludwig-Maximilians-University Munich, Germany N. PROKOF’EV, University of Massachusetts Amherst, USA L. REINING, École Polytechnique, France G. ROHRINGER, Universität Hamburg, Germany G. SANGIOVANNI, Julius-Maximilians-Universität Würzburg, Germany S. SORELLA, SISSA, ITALY B. SVISTUNOV, University of Massachusetts Amherst, USA P. THUNSTRÖM, Uppsala University, Sweden A.-M. TREMBLAY, Université de Sherbrooke, Canada K. VAN HOUCKE, Ecole Normale Supérieure, France J. VON DELFT, Ludwig-Maximilians-University Munich, Germany F. WERNER, Ecole Normale Supérieure, France Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

17 Aug 2020 - 21 Aug 2020

@ ICTP

Condensed Matter and Statistical Physics

Precision Theoretical Approaches to Correlated Electrons * CANCELLED * | (smr 3469)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Budinich Lecture Hall (LB)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Evgeny Kozik (King's College London, UK), Alessandro Toschi (Technische Universität Wien, Austria), Local Organiser: Mikhail Kiselev

Cosponsor(s): Engineering and Physical Sciences Research CouncilUKRI, King’s College LondonKCL

Support E-Mail: smr3469@ictp.it

**DEADLINE: 15/05/2020**

Europe/Rome Note: ICTP has suspended all educational activities from 24 February as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx ICTP ICTP pio@ictp.it

Activity

17 Aug 2020 - 21 Aug 2020

@ ICTP

Condensed Matter and Statistical Physics

Quantum Microwaves, Heat Transfer and Many-body Physics in Mesoscopic Superconducting Devices * POSTPONED * | (smr 3470)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Secretary: Pandora Malchose

Organizer(s): Ciprian Padurariu (Ulm University), Björn Kubala (Ulm University), Wiebke Guichard (Institut Neel, CNRS, Grenoble), Joachim Ankerhold (Ulm University), Local Organiser: Rosario Fazio

Cosponsor(s): IQSR Integrated Quantum Science and Technologyiqst

Hosted Activity

24 Aug 2020

@ Trieste - Italy

C-13 IUPAP Meeting (in remote) | (smr H615)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Organizer(s): Joe Niemela,

Europe/Rome *** VIRTUAL on ZOOM *** LiveStreamed on YouTube The School on Superstring Theory and Related Topics provides pedagogical treatment of these subjects through lectures by some of the world's top string theorists. The activity is intended for theoretical physicists or mathematicians with knowledge of quantum field theory, general relativity and string theory. LECTURERS include: Ahmed Almheiri (IAS, Princeton) Horacio Casini (Centro Atomico Bariloche) Clay Córdova (University of Chicago) Atish Dabholkar (ICTP) Zohar Komargodski (Stony Brook & Weizman Institute) Pavel Putrov (ICTP) Douglas Stanford (Stanford) Mithat Ünsal (North Carolina State University) TOPICS include: Quantum information and black holes Entanglement and quantum field theory Anomalies in quantum field theory Semiclassical dynamics and resurgence Mock modularity in physics Fun in Two Space-Time Dimensions Zoom Meeting ICTP pio@ictp.it

Activity

24 Aug 2020 - 4 Sep 2020

@ Zoom Meeting

High Energy Cosmology and Astroparticle Physics

Summer School on Superstring Theory and Related Topics | (smr 3551)

Secretary: Nadia van Buuren

Organizer(s): A. Dabholkar (ICTP), E. Gava (ICTP and INFN), V. Hubeny (UC Davis), Z. Komargodski (Stony Brook & Weizman Institute), K.S. Narain (ICTP), P. Putrov (ICTP), Local Organiser: K. Papadodimas

Cosponsor(s): the Italian Institute for Nuclear Physics (INFN)infn

Support E-Mail: smr3551@ictp.it

**DEADLINE: 31/07/2020**

Europe/Rome The School provides early stage researchers with interactive experiences of hands-on research involving table-top experiments with computer data acquisition and modeling. Participants will also take part in professional development of improved scientific communication in English. An intensive programme of laboratory experiments, mathematical modeling, and lectures gives participants immersive experiences with complex systems in the physical and life sciences. Additionally, participants will present their own research in talks and posters with extensive faculty feedback to enhance the presentation quality. The faculty are eminent scientists who have conducted frontier table-top research published in leading international scientific journals. Topics: Biological Physics Modeling of Epidemics Soft Matter Physics Turbulence - Flow analysis by imaging particles Fluid Instabilities—Digital movies to determine dynamics Machine learning in table-top experiments Microfluidics Granular Materials Modeling in MATLAB - Molecular Dynamics Maker Movement Techniques - Microcontrollers Chemical patterns Computational Modeling Speakers will include: A. BROWN, University of Edinburgh, UK L. CRISTOFOLINI, University of Parma, ITALY F. FENTON, Georgia Institute of Technology, USA B. HUNT, University of Maryland, College Park, USA M. POLIN, University of Warwick, UK A-S. SMITH, FAU Erlangen-Nurnberg, GERMANY T. SOLOMON, Bucknell University, USA Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

24 Aug 2020 - 4 Sep 2020

@ ICTP

Hands-On Research in Complex Systems School * CANCELLED * | (smr 3472)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Eric Kostelich (Arizona State University, USA), Teuta Pilizota (The University of Edinburgh, UK), Michael F Schatz (Georgia Institute of Technology, USA), Mark Shattuck (The City College of New York, USA), Local Organiser: Maria Liz Crespo

Cosponsor(s): Arizona State University (ASU)asu, Georgia Techgt, The University of Edinburghuniv_edinb

Support E-Mail: smr3472@ictp.it

**DEADLINE: 24/05/2020**

Activity

24 Aug 2020 - 4 Sep 2020

@ ICTP

Mathematics

Geometry of Discrete Actions * CANCELLED * | (smr 3471)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Budinich Lecture Hall (LB)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): David Dumas (University of Illinois at Chicago, U. S. A.), Bertrand Deroin (Université de Cergy-Pontoise, France), John Parker (University of Durham, U. K.), José Seade (Universidad Nacional Autónoma de México), Local Organiser: Lothar Göttsche

Support E-Mail: smr3471@ictp.it

Europe/Rome The 2019-2020 Postgraduate Diploma Graduation Ceremony and 2020 Spirit of Salam Award Ceremony takes place on Thursday 27 August 2020. The programme is as follows: 9:30 - 11:00: Postgraduate Diploma Graduation Ceremony 11:00 - 12:00: Spirit of Salam Award Pre-registration is required at the following url: https://zoom.us/webinar/register/WN_T6PtF7KfRaCPXeObPCVtMg After registering, you will receive a confirmation email containing information about joining the webinar. On the occasion of the Spirit of Salam Award, two side events have been organized as follows: - Thursday 27 August at 12:00: Special talks and reminiscences by Professors Yu Lu and Ramakrishnan in honour of Prof.Tosatti (same ZOOM registration ID as above) - Friday 28 August at 10:00: Reminiscences by colleagues, students and friends in honour of Prof. Narasimhan followed by a Maths Colloquium by Prof. Nigel Hitchin on "Generalizations of Teichmüller space". More information and registration at the following link: http://indico.ictp.it/event/9435/ The ceremonies and talks will also be available on livestream via the ICTP website. Due to the safety measures that are in place, access to the Budinich Lecture Hall is reserved for Postgraduate Diploma Students and invited participants (max 30 pax). All are welcome to join these special events! Zoom webinar ICTP pio@ictp.it

Ceremony

27 Aug 2020

@ Zoom webinar

2020 Postgraduate Diploma Programme Graduation Ceremony and 2020 Spirit of Salam Award Ceremony

Europe/Rome on the occasion of the presentation of the Spirit of Salam Award to M.S. Narasimhan Programme: 10.00 Welcome and remarks by the ICTP Director 10.05 Reminiscences by colleagues, students and friends 11.00 Mathematics Colloquium by Nigel Hitchin (Oxford) Registration at WEBINAR Link: Please register in advance for this webinar: https://zoom.us/webinar/register/WN_FS20kYEVTrKrq9bKiVNqAQ After registering, you will receive a confirmation email containing information about joining the webinar. Should you not be able to join the Webinar, the Colloquium is also available in live streaming at: ictp.it/livestream Abstract: The famous theorem of Narasimhan and Seshadri showed that the moduli space of representations of the fundamental group of a surface into a unitary group could be described holomorphically in terms of stable vector bundles on an algebraic curve. The theory of Higgs bundles extended this idea to noncompact groups and in particular to real forms like SL(n,R) and in this case there is a component which is described as a space of holomorphic differentials on the curve. The special case n=2 gives classical Teichmüller space. The talk concerns approaches to the case of SL(n,R) where n=∞, interpreted as the group of Hamiltonian diffeomorphisms of the cotangent bundle of the circle and leads to differential geometric questions about geodesics on surfaces. The actual presentation of the Prize will take place during the Diploma graduation ceremony, on Thursday, 27 August at 9:30; see (http://indico.ictp.it/event/9298/) Zoom Meeting ICTP pio@ictp.it

Seminar

28 Aug 2020

@ Zoom Meeting

Mathematics

ICTP Mathematics Colloquium by Nigel Hitchin on "Generalizations of Teichmüller space"

Speaker(s): Nigel Hitchin, FRS (University of Oxford)

Seminar Start Time: 10:00

Europe/Rome This year there will be no face-to-face CODATA/RDA Summer School in Trieste in 2020. While this cancellation is disappointing, it allows a new opportunity - a virtual CODATA/RDA School of Research Data Science alumni event. We invite all of our past students to join us online for a review, update and training strategies for each of the curriculum sections that were covered during our previous schools. Our goal is to make our alumni more confident in sharing their learning and to train others. Students will be provided with a preparatory reading list in the topics to remind themselves of what they had previously learnt. Over the period of two weeks, students will be able to attend a virtual session (1-2 hours a day) on each of the individual topics taught with a short review, new topics or updates since their last school, and strategies for instructing in this curriculum area (preparation, key teaching points, how to arrange the hands-on sessions, etc.). These sessions will provide the alumni the chance to reacquaint themselves with the materials and with their colleagues. Topics: Research Data management Open and Responsible Research Author Carpentry Visualisation Machine Learning Artificial Neural Networks Computational Infrastructures The forum: If you have any question(s) while working through the preparatory material, feel free to post your question(s) on the forum. You will need to register first. Online - ICTP pio@ictp.it

Activity

31 Aug 2020 - 11 Sep 2020

@ Online -

New Research Areas (High Performance Computing, Information Technology)

The CODATA-RDA Research Data Science Summer School | (smr 3468)

Room: Online

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Marcela Alfaro Cordoba (Universidad de Costa Rica, Costa Rica), Louise Bezuidenhout (University of Oxford, UK), Raphael Cobe (UNESP, Brazil), Sara El Jadid (Ibn Tofail University, Morocco), Ivan Girotto (ICTP), Simon Hodson (CODATA, France), Ekpe Okorafor (Big Data Academy, Accenture, USA & AUST), Rob Quick (Indiana University, USA), Bianca Peterson (North-West University, South Africa), Hugh Shanahan (Royal Holloway University, UK), Ulrich Singe (ICTP), Local Organiser: Clement Onime

Cosponsor(s): International Council for Science - Committee on Data for Science and Technologycodata, The Research Data Alliance Europe (RDA-EU)rda-eu, FairsFairfairsfair

Support E-Mail: smr3468@ictp.it

**DEADLINE: 24/08/2020**

Europe/Rome The Maker Faire Trieste on 4 and 5 September 2020 had in person exhibits of makers which showed around 100+ projects in the gorgeous Piazza Unità d’Italia facing the sea in front of Trieste’s city hall and the other historical buildings ...following all obligations and modalities specified by public rulings on prevention of COVID-19 at the time of this event. The full Photo Gallery with over 700 pictures, many videos, social media, news articles, etc can be found at http://trieste.makerfaire.com/ Trieste - Italy ICTP pio@ictp.it

Activity

4 Sep 2020 - 5 Sep 2020

@ Trieste - Italy

ICTP-SDU Maker Faire - ESOF 2020 Science in the City Festival | (smr 3456)

Room: Piazza Unità d'Italia

Secretary: Federica Delconte

Organizer(s): Carlo Fonda (ICTP), ICTP Scientific Contact: Enrique Canessa

Support E-Mail: smr3456@ictp.it

Activity

7 Sep 2020 - 25 Sep 2020

@ ICTP

College on Medical Physics: Medical Imaging Physics and Technology - Capacity Building in Developing Countries * POSTPONED * | (smr 3473)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Secretary: Suzie Radosic

Organizer(s): Dr Mario De Denaro (Azienda Sanitaria Universitaria Integrata di Trieste), Prof Slavik Tabakov (King's College London UK), Local Organiser: Luciano Bertocchi

Europe/Rome Please register in advance for this meeting at: https://zoom.us/meeting/register/tJ0tceygrz0qGdSD8p2tkrI5xgvJrNO6jdww After registration, you will receive a confirmation email containing information about joining the meeting. Zoom meeting ICTP pio@ictp.it

Seminar

8 Sep 2020

@ Zoom meeting

Cosmology

Gravitational Wave Astronomy

Speaker(s): Riccardo Sturani (IIP, Universidade Federal do Rio Grande do Norte, Natal, Brazil)

Abstract. The recent observations of gravitational waves emitted by coalescences of binary compact objects like black holes and neutron stars marked the dawning of gravitational wave astronomy as a new science. Beyond the immediate and tremendous impact in Astrophysics and Cosmology, the consequences that the opening of this new observational window has on fundamental physics will be highlighted. In particular field theory methods, historically developed within the framework of quantum amplitude computations applied to particle physics, turned out to be useful to analytically model the dynamics of binary system, and they will be even more important to maximize the physics output of detections in the near future when more accurate observations of gravitational waves will be available.

Seminar Start Time: 14:30

Activity

14 Sep 2020 - 25 Sep 2020

@ ICTP

Condensed Matter and Statistical Physics

Frontiers of Matter Wave Optics * CANCELLED * | (smr 3475)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Budinich Lecture Hall (LB)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Markus Arndt (University of Vienna), Angelo Bassi (University of Trieste), Andrea Trombettoni (CNR-IOM and SISSA), Local Organiser: Marcello Dalmonte

Support E-Mail: smr3475@ictp.it

Europe/Rome The online Workshop is supported by ICTP. This online Workshop will recapitulate the fundamental concepts of nano-and optomechanical systems and introduce the key concepts behind future potential nano- and optomechanical technologies. To account for the breadth of the field, the workshop will consist of nine talks delivered by international experts. These talks will reflect the fields which currently attract the highest scientific interest and/or application potential and cover landmark implementations of nanomechanical systems. They also represent a good balance between experimental and theory perspectives, fundamental recurrent topics and modern topics which only developed in the last couple of years, as well as between classical and quantum mechanical aspects of nanomechanics. Speakers: M. ASPELMEYER, University of Vienna, Austria A. BLESZYNSKI JAYICH, University of California in Santa Barbara, USA Y. CHU, ETH Zurich, Switzerland A. CLERK, University of Chicago, USA M. DYKMAN, Michigan State University, USA J. HARRIS, Yale University, USA S. HUBER, ETH Zurich, Switzerland A. SAFAVI-NAEINI, Stanford University, USA *Posters* Everyone is invited to submit links to posters, which will be displayed on the website https://mpl.mpg.de/divisions/marquardt-division/workshops/2020-nanomechanics-online-workshop/ Please follow the instructions there on how to submit the link. The poster website will be briefly advertised during the workshop and participants are encouraged to directly contact the poster authors. *Poster flashes* Wednesday, Sep 16, after the talks, starting around 7pm, we will give any interested participant the opportunity to present their poster using 2 slides within 3 minutes. Online - ICTP pio@ictp.it

Activity

15 Sep 2020 - 17 Sep 2020

@ Online -

Condensed Matter and Statistical Physics

Frontiers of Nanomechanics | (smr 3552)

Room: Online

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Eva Weig (University of Konstanz, Germany), Yaroslav Blanter (TU Delft, The Netherlands), Florian Marquardt (Max Planck Institute for the Science of Light, Germany), Local Organiser: Mikhail Kiselev

Support E-Mail: smr3552@ictp.it

Europe/Rome Please note unusual time!!! Please register in advance for this meeting: https://zoom.us/meeting/register/tJ0pcu6srTMiGtCT0p-vgstETyj_nF5m-UuB After registering, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it

Seminar

15 Sep 2020

@ Zoom Meeting

Strings and Higher Dimensional Theories

Gravity from Averaging CFTs

Speaker(s): Alex Maloney (Rutherford Physics Bldg., McGill University, Canada)

Abstract. I will explore the idea that certain theories of gravity in Anti-de Sitter space are dual to an average over an ensemble of quantum theories, rather than to a specific quantum theory. I will describe an average over Narain’s family of two-dimensional conformal field theories which describe free bosons on a torus, and compute the partition function using the Siegel-Weil formula. The result takes the form of a sum over geometries as one would expect in a theory of gravity. But the gravitational theory looks more like a Chern-Simons theory than like Einstein gravity.

Seminar Start Time: 15:30

Europe/Rome The workshop is live-streamed on the ICTP Condensed Matter and Statistical Physics YouTube page at the following link: https://www.youtube.com/channel/UCcW7z2pE37Z4I1koTwahBfA There continues to be a growing community of scientists in both the developed and developing world, interested in and working on applications of molecular dynamics techniques to understand biological systems. This is highly relevant for problems in health and medicine. The topics of this workshop is relevant in diverse contexts, from basic science, where molecular modelling and simulations have become indispensable tools even to interpret and design experiments, to applicative avenues such as health and medicine where advanced MD simulation techniques are used for insilico drug screening. This workshop is aimed at bringing together world experts working in a broad range of topics related to bio-molecular simulations which will expose both young and advanced researchers to the state-of-the-art in the field. Topics: Quantum Mechanics in Biology: Enzyme Catalysis Protein Dynamics/Protein Folding Drug Design Protein Structure Prediction DNA/RNA Dynamics/Folding Coarse-grain simulations of nucleic acids & chromatin Multi-scale computer simulations for polymer melts Spectroscopy: Excited State Dynamics in Biology Stochastic processes in biophysics Speakers: M. BONOMI, Institut Pasteur - CNRS, France M.E. CASIDA, University of Grenoble, France M. CERIOTTI, Swiss Federal Institutes of Technology Lausanne (EPFL), Switzerland B. CHENG, Trinity College Cambridge University, UK G. COLOMBIO, Università di Pavia, Italy M. DE VIVO, Istituto Italiano di Tecnologia, Italy R. EICHHORN, The Nordic Institute for Theoretical Physics, Sweden R. EVERAERS, École Normale Supérieure de Lyon, France G. HUMMER, Max Planck Institute of Biophysics, Germany V. KAILA, Stockholm University, Sweden L. KAMMERLIN, Uppsala Biomedical Center, Sweden S. KHALID, University of Southampton, UK E. ROSTA, King's College London, UK L. ROVIGATTI, Sapienza University of Rome, Italy K. SEKIMOTO, Université Paris Diderot, France S. WOLF, Albert Ludwigs University, Germany Online - ICTP pio@ictp.it

Activity

21 Sep 2020 - 25 Sep 2020

@ Online -

Condensed Matter and Statistical Physics

ICTP-SISSA-CECAM Workshop on Molecular Dynamics and its Applications to Biological Systems | (smr 3483)

Room: Online

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Giovanni Bussi (SISSA), Alessandro Laio (SISSA), Alessandra Magistrato (SISSA), Christian Micheletti (SISSA), Alex Rodriguez (ICTP), Edgar Roldan (ICTP), Angelo Rosa (SISSA), Local Organiser: Ali Hassanali

Cosponsor(s): International School for Advanced Studiessissa3, Centre Européen de Calcul Atomique et Moléculairececam2

Support E-Mail: smr3483@ictp.it

**DEADLINE: 14/09/2020**

Hosted Activity

21 Sep 2020 - 24 Sep 2020

@ Trieste - Italy

AAA-TWAS Science Diplomacy Course | (smr H618)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Organizer(s): TWAS,

Europe/Rome Due to Covid-19 pandemic, the activity has been cancelled (last update: 01.03.2021) Beijing - People's Republic of China ICTP pio@ictp.it

Activity

21 Sep 2020 - 25 Sep 2020

@ Beijing - People's Republic of China

Condensed Matter and Statistical Physics

Dissipative Quantum Many-Body Systems | (smr 3480) - * CANCELLED *

Address: CSRC - Beijing Computational Science Research Center

Secretary: Nicoletta Ivanissevich

Organizer(s): Stefano Chesi (Beijing CSRC, P.R. China), Aashish Clerk (University of Chicago, USA), Yuval Gefen (The Weizmann Institute of Science, Israel), Yingdan Wang (Institute of Theoretical Physics, Chinese Academy of Sciences, P.R. China), ICTP Scientific Contact: Rosario Fazio

Europe/Rome Please register in advance for this meeting at: https://zoom.us/meeting/register/tJIsf-yurDkrHNG5jcghEWy832HK97baZSnL After registering, you will receive a confirmation email containing information about joining the meeting. ZOOM Meeting ICTP pio@ictp.it

Seminar

22 Sep 2020

@ ZOOM Meeting

Cosmology

Circular polarization of gravitational waves from the early-universe turbulent sources

Speaker(s): Tina Kahniashvili (Carnegie Mellon University, USA and Ilia State University, Georgia)

Abstract. A space-based laser interferometer, pioneered by NASA's LISA concept and now a ESA cornerstone mission, will enable direct detection of gravitational waves at lower frequencies than LIGO, without being limited by seismic noise. Perhaps the most intriguing source for LISA is the stochastic gravitational wave background produced by turbulent plasma motions in an early-universe, particularly at the electroweak energy scale. In this talk I will discuss the stochastic gravitational wave background generated from early-universe turbulence, including the effects of possible parity violation which will result in the non-zero circular polarization. Turbulent sources possibly present at the electroweak energy scales produce gravitational waves with a characteristic frequency of a millihertz, squarely in LISA's sensitivity window. I will present our recent results (in collaboration with Axel Brandenburg, Arthur Kosowsky, Sayan Mandal and Alberto Roper Pol) of direct numerical simulations to compute the net circular polarization of gravitational waves from helical (chiral) turbulent sources in the early universe for a variety of initial conditions. I will discuss the resulting gravitational wave signal assuming different turbulence genesis such as magnetically or kinetically dominant cases. Under realistic physical conditions in the early universe we have computed numerically for the first time the total polarization degree of the gravitational waves and its spectral distribution. Our major finding consists of the spectral polarization degree that strongly depends on the initial conditions. The peak of the spectral polarization degree occurs (in the wavenumber space) at twice the typical wavenumber of the source, as expected, and for the fully helical decaying turbulence, reaches its maximum (100\%) only at the peak. In addition, we have determined the temporal evolution of the turbulent sources as well as the resulting gravitational waves, showing that the dominant contribution to the spectral energy density happens shortly after the source activation and through prolonged (slow decay) turbulence, the increase of the gravitational wave amplitude at low frequencies can be achieved. Finally, I will address the detection prospects through LISA for the gravitational wave signal and its net polarization.

Seminar Start Time: 14:30

Europe/Rome https://zoom.us/j/475819702 Meeting ID: 475-819-702 If you haven't registered for previous QLS webinars, please contact qls@ictp.it to obtain the PASSWORD for this zoom meeting. Actively regulated symmetry breaking, which is ubiquitous in biological cells, underlies phenomena such as directed cellular movement and morphological polarization. Here, we investigate how an organ-level polarity pattern emerges through symmetry breaking at the cellular level during the formation of a mechanosensory organ. Combining theory, genetic perturbations and in vivo imaging, we study the development and regeneration of the fluid-motion sensors in the zebrafish’s lateral line. We find that two interacting symmetry-breaking events—one mediated by biochemical signalling and the other by cellular mechanics—give rise to precise rotations of cell pairs, which produce a mirror-symmetric polarity pattern in the receptor organ. Zoom meeting ICTP pio@ictp.it

Seminar

22 Sep 2020

@ Zoom meeting

Quantitative Life Sciences

First a war, then a dance: Mechanochemical symmetry breaking in sensory organ development

Speaker(s): Anna Erzberger (EMBL)

Seminar Start Time: 16:00

Europe/Rome Register in advance for this meeting: https://zoom.us/meeting/register/tJMpf-yoqDkoGtfqr-J--H4Ql7R-eF8hQDbM After registering, you will receive a confirmation email containing information about joining the meeting. Abstract: Generalised Monge-Ampere equations are a family of PDE that contain inverse Hessian equations like the J-equation, and special cases of the deformed Hermitian-Yang-Mills equation. I shall describe a couple of results about them. Firstly, these equations can be solved on projective manifolds if and only if Nakai-Moizeshon / Demailly-Paun-style intersection numbers are positive. This result improves a recent theorem of Gao Chen (who assumed uniform strict-positivity), and settles a conjecture of Lejmi-Szkelyhidi in the projective case. Secondly, assuming uniform strict-positivity, an equivariant version of the same result holds. Thus, earlier results due to Collins-Szekelyhidi are recovered. This work is joint with Ved Datar. Zoom Meeting ICTP pio@ictp.it

Seminar

24 Sep 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar: Numerical criteria for the solvability of generalised Monge-Ampere equations on projective manifolds

Speaker: Vamsi Pritham Pingali (IISc, India)

Seminar Start Time: 14:00

Activity

28 Sep 2020 - 2 Oct 2020

@ ICTP

Earth System Physics

Biosphere - Climate Interactions in Earth System Models at Global and Regional Scales * CANCELLED * | (smr 3477)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Klaus Fraedrich (MPI-Hamburg), Jost Von Hardenberg (CNR-ISAC), Cosimo Solidoro (OGS), Filippo Giorgi (ICTP), Local Organiser: Fred Kucharski

Support E-Mail: smr3477@ictp.it

Europe/Rome The workshop is live-streamed on the ICTP Condensed Matter and Statistical Physics YouTube page at the following link: https://www.youtube.com/channel/UCcW7z2pE37Z4I1koTwahBfA The aim of the workshop is to discuss recent progress in the investigation of dynamics of excited charges in semiconductors. The workshop will reach a global audience. Topics: Electron transport Ultrafast dynamics Light-matter interactions Polaron formation and dynamics Exciton dynamics and dissociation Excited-state relaxation Time-dependent density functional theory Many-body perturbation theory Speakers: M. BERNARDI, Caltech, USA C. DRAXL, Humboldt University, Germany G. HAUTIER, UC Louvain, Belgium C. LIENAU, University of Oldenburg, Germany A. MARINI, CNR, Italy O. PREZHDO, University of Southern California, USA A. SELLONI, Princeton University, USA A. TROISI, University of Liverpool, UK Online - ICTP pio@ictp.it

Activity

28 Sep 2020 - 30 Sep 2020

@ Online -

Condensed Matter and Statistical Physics , New Research Areas (Renewable Energies)

On-line Workshop on Excited Charge Dynamics in Semiconductors | (smr 3516)

Room: Online

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Local Organisers: Ralph Gebauer, Nicola Seriani

Support E-Mail: smr3516@ictp.it

**DEADLINE: 13/09/2020**

Europe/Rome Note: ICTP has suspended all educational activities from 24 February as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx In recent years there has been an increase of therapeutic applications using radiopharmaceuticals. This advanced workshop will provide the participants with a comprehensive review of the developments in the field of nuclear medicine image quantification and practical internal dosimetry. The purpose of this workshop is to contribute to the development of clinically qualified medical physicists in nuclear medicine by providing theoretical and practical tools for internal dosimetry. Molecular radiotherapy has demonstrated unique therapeutic advantages in the treatment of an increasing number of cancer types. Such treatments can deliver high absorbed doses to specific targets (tumour lesions) and healthy organs (organs at risk) and, thus, require a patient specific dose assessment. These calculations help to optimize the amount of radioactivity to be administered and to reduce the risk of under- or over-dosing patients, otherwise observed when using empirical approaches to activity determination. Practical sessions in a clinical setting will be included. The workshop is under the umbrella of ICTP and IAEA and is expected to maintain professional competency and to keep knowledge and skills of medical physicists working in nuclear medicine up to date. Topics: Physics and technology of SPECT/CT and PET/CT Quantitative SPECT and PET imaging MIRD formalism Voxel-based methods Peptide receptor radionuclide therapy I-131 therapy Radiation safety Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. The process of selection of participants might include a mandatory written examination. ICTP ICTP pio@ictp.it

Activity

28 Sep 2020 - 2 Oct 2020

@ ICTP

Joint ICTP-IAEA Workshop on Dosimetry in Radionuclide Therapy and Diagnostic Nuclear Medicine * CANCELLED * | (smr 3478)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Peter Knoll (IAEA), Local Organiser: Renato Padovani

Cosponsor(s): International Atomic Energy Agencyiaea3

Support E-Mail: smr3478@ictp.it

**DEADLINE: 15/06/2020**

Europe/Rome https://zoom.us/j/475819702 Meeting ID: 475-819-702 If you haven't registered for previous QLS webinars, please contact qls@ictp.it to obtain the PASSWORD for this zoom meeting. Biological systems are able to replicate information with outstanding accuracy. In biochemical pathways such as those leading to DNA duplication or protein translations, different monomers can be distinguished because of equilibrium free-energy differences or via non-equilibrium mechanisms. I will show how, in simple copying reactions, these two discrimination modes are mutually exclusive and lead to opposite tradeoffs between error, dissipation and reaction velocity. In multi-step reactions, such as in kinetic proofreading, these different modes can be combined to improve overall accuracy. In the second part of my talk, I will present recent results about fluctuations in accuracy and speed of these reactions. Zoom meeting ICTP pio@ictp.it

Seminar

29 Sep 2020

@ Zoom meeting

Quantitative Life Sciences

Thermodynamics of error correction

Speaker(s): Simone Pigolotti (OIST)

Seminar Start Time: 14:00

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJ0ocOGpqTwuGdOeJQCgJyRF_7tazUC600zq After registering, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it

Seminar

29 Sep 2020

@ Zoom Meeting

Strings and Higher Dimensional Theories

Modular invariants in strongly-coupled N=4 super-Yang-Mills

Speaker(s): Silviu S. Pufu (Princeton University)

Abstract. In this talk, I will first review some of the recent progress on computing holographic correlators using analytic bootstrap techniques combined with supersymmetric localization, focusing on the case of the N = 4 super-Yang-Mills theory. From taking a certain flat space limit of the holographic correlators, one can obtain scattering amplitudes of gravitons in string theory, and one can then reproduce some of the known results for these scattering amplitudes. In particular, from instanton effects in the N=4 SYM theory, I will explain how to reproduce the non-holomorphic Eisenstein series known to appear in type IIB string theory scattering amplitudes, and I will explain how to derive many other modular invariants appearing in correlation functions of the N=4 SYM theory.

Seminar Start Time: 14:30

Activity

3 Oct 2020 - 4 Oct 2020

@ ICTP

2nd NASA Space-Apps Challenge, Hackathon * POSTPONED * | (smr 3512)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH) and Giambiagi Lecture Hall (AGH)

Secretary: Federica Delconte

Organizer(s): Carlo Fonda (ICTP), Local Organiser: Enrique Canessa

Cosponsor(s): Regione Autonoma Friuli Venezia GiuliaFVG

Support E-Mail: smr3512@ictp.it

Europe/Rome The Conference is live-streamed on the ICTP Condensed Matter and Statistical Physics YouTube page at the following link: https://www.youtube.com/channel/UCcW7z2pE37Z4I1koTwahBfA Co-hosting the annual AQC2020 originally scheduled in June 2020 The virtual conference will present recent progresses and perspectives in the field of adiabatic quantum computation. It will run continuously in 3 sessions over 2 days involving co-hosts in Italy, California, and Japan. Adiabatic quantum computing and quantum annealing are promising technologies to be used in the near future quantum devices. The conference will deal with academic and basic research on these topics, with a broad focus, including quantum approximate optimization (QAOA) and other variational quantum approaches, and in close connection with the neighbouring fields of Quantum Simulations and Quantum Computation. It will bring together top-world experts in quantum technologies from different areas of condensed matter, photonics and atomic-and-molecular physics to discuss together their latest results and viewpoints. The scientific focus will be on conceptual, theoretical, and experimental trends. The meeting will collect, as is well established in Trieste, the world community active in these fields, for fruitful encounters and exchanges, and with an intense mixing of theoretical, simulation and experimental experiences, including emerging countries, in line with the mission of ICTP. Topics: Role of entanglement Role of dissipation Role of non-stoquasticity Quantum complexity Non-adiabatic quantum computing Variational quantum algorithms Counter-diabatic driving Theoretical and numerical models of adiabatic quantum computing Non-traditional quantum driving including inhomogeneous driving and reverse annealing Digitized quantum annealing Quantum machine learning Speakers: J. ATALAYA, University of California Berkeley, USA Y. BANDO, Institute of Innovative Research, Tokyo Institute of Technology, Japan L. BRADY, University of Maryland, USA E. CROSSON, Physics Center for Quantum Information and Control University, USA L. FRY-BOURIAUX, University College London, UK Z. GONZALEZ IZQUIERDO, Universities Space Research Association, USA A. HARTMANN, University of Innsbruck, Austria M. HASTINGS, Microsoft Corporation, USA M. KHEZRI, University of Southern California, USA A. KING, ‎D-Wave Systems Inc., Canada W. LECHNER, IQOQI, Austria D. LIDAR, University of Southern California, USA G. B. MBENG, University of Innsbruck, Austria P. MCMAHON, Cornell Universtity, USA N. MOHSENI, MPI, USA G. MOSSI, NASA, Ames, USA M. MOTOMURA, Institute of Innovative Research, Tokyo Institute of Technology, Japan J. MOZGUNOV, University of Southern California, USA H. NISHIMORI, Tokyo Institute of Technology, Japan E. RIEFFEL, NASA, USA T. ROSENBAUM, Caltech, USA Online - ICTP pio@ictp.it

Activity

5 Oct 2020 - 6 Oct 2020

@ Online -

Condensed Matter and Statistical Physics

Conference on Quantum Annealing/Adiabatic Quantum Computation | (smr 3474)

Room: Online

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Wolfgang Lechner (IQOQI), Hidetoshi Nishimori (Tokyo Institute of Technology), Giuseppe E. Santoro (SISSA), Local Organiser: Antonello Scardicchio

Cosponsor(s): Trieste Institute for the Theory of Quantum Technologies, TQTtqt

Support E-Mail: smr3474@ictp.it

**DEADLINE: 03/10/2020**

Europe/Rome Space Weather refers to conditions on the Sun, in the solar wind, magnetosphere, ionosphere and thermosphere, which can influence the performance and reliability of a variety of space borne and ground-based technological systems. This Workshop is intended to provide the participants with an introduction to ionospheric physics and the science of Space Weather, including a basic knowledge on GNSS systems and their applications. Space Weather is recognised as the cause of significant errors experienced by Global Satellite Navigation Systems (GNSS), and Satellite Based Augmentation Systems (SBAS). GNSS or SBAS signals, propagating from a satellite to the user receiver, pass through the ionosphere where they are subject to Space Weather effects. Under these conditions pseudorange errors and signals scintillations at user receiver level may be present. These effects are more critical at low latitudes, where most of the developing countries are located. The purpose of this workshop is to give an introduction to the physics of the ionosphere and to provide a basic knowledge on GNSS systems and their applications. Particular focus will be given to Space Weather research with GNSS data. Topics: • Introduction to GNSS • GNSS Applications • The Sun-Earth Connection • Space Weather • Ionospheric Modeling • Ionospheric Irregularities • Ionospheric Total Electron Content Directors: P. DOHERTY, Boston College S. GADIMOVA, UNOOSA-ICG B. NAVA, ICTP S. RADICELLA, ICTP Local Organisers: A. EMRAN, CRASTE-LF, Morocco Speakers: C. AMORY, Sorbonne University, France A. COSTER, MIT, USA P. DE SMET, EC P. DOHERTY, Boston College, USA S. GADIMOVA, UNOOSA-ICG K. GROVES, Boston College, USA B. NAVA, ICTP S. RADICELLA, ICTP Online - ICTP pio@ictp.it

Activity

5 Oct 2020 - 6 Oct 2020

@ Online -

African Workshop on GNSS and Space Weather | (smr 3479)

Room: Online

Secretary: Elizabeth Brancaccio

Organizer(s): Sharafat Gadimova (UNOOSA, International Committee on GNSS), Patricia Doherty (Boston College, USA), Bruno Nava (ICTP), Sandro Radicella, Local Organiser: A. Emran (CRASTE-LF, Morocco)

Cosponsor(s): African Regional Centre for Space Science and Technology Education- in French Language (CRASTE-LF)craste, Boston Collegebcl, International Committee on Global Navigation Satellite Systemsicg2

Please note: WORKSHOP DATES HAVE BEEN REVISED NEW DATES 5-6 October 2020 **DEADLINE: 25/09/2020** **DEADLINE: 25/09/2020**

Hosted Activity

5 Oct 2020 - 9 Oct 2020

@ Trieste - Italy

OWSD Early Career Fellowship Programme Orientation Workshop | (smr H613)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Organizer(s): OWSD-TWAS,

Activity

5 Oct 2020 - 16 Oct 2020

@ ICTP

Earth System Physics

Seismic Tomography and Earth Structure * CANCELLED * | (smr 3482)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Local Organiser: Abdelkrim Aoudia

Support E-Mail: smr3482@ictp.it

Europe/Rome Note: ICTP has suspended all educational activities from 24 February as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx The course programme covers scientific topics of direct relevance to the physical, chemical and radiological phenomena occurring during progression of severe accidents in Water Cooled Reactors, including an overview of past events and advanced technologies designed to cope with such events. The course aims at building a comprehensive understanding of the complex phenomena associated with progression of severe accidents in WCRs and their consequences. Knowledge transfer will be facilitated between the international expert lecturers and the young nuclear professional and engineer participants through discussions and hands-on learning, with the goal to gain a comprehensive understanding of the physical, chemical and radiological phenomena specific to severe accidents in WCRs. Relevant nuclear safety principles, recent advancements in scientific methods, approaches and simulation tools to assess the interrelated phenomena during different phases of severe accident progression, and the role of technologies designed to prevent progression of, and mitigate consequences from, such accidents in WCRs will be presented. Prerequisites: As part of the application, participants should submit a 2-page original essay, covering two of the course topics of their choice from the topic Phenomenology in Severe Accident Progression. Introduction Physics of Water Cooled Power Reactors Nuclear Safety and IAEA Safety Standards for Water Cooled Power Reactors Defence in Depth and Plant Design Envelope in Water Cooled Power Reactors Progression of Fukushima Daiichi Accident and its Consequences Phenomenology in Severe Accident Progression Nuclear Fuel Degradation Relocation of Melted Fuel In-Vessel Melt Retention Reactor Vessel Failure Mechanisms Ex-Vessel Corium Cooling Early-Phase Containment Failure Late-Phase Containment Failure Physics and Chemistry of Source Term Fission Products Behaviour and Transport Hydrogen Generation, Transport and Explosion Numerical Simulations of Severe Accident Phenomena Phenomenology of Technological Challenges in Propagation of Severe Accidents and Mitigation of their Consequences Active and Passive Core and Containment Cooling Containment Pressure Venting Prevention of Hydrogen Explosions Severe Accident Management Emergency Preparedness and Response Waste Management and Decommissioning after Severe Accidents Grants: A limited number of grants are available to support the attendance of selected participants, with priority given given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

5 Oct 2020 - 9 Oct 2020

@ ICTP

Joint ICTP-IAEA 3rd Course on Scientific Novelties in the Phenomenology of Severe Accidents in Water Cooled Reactors * CANCELLED * | (smr 3481)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Euler Lecture Hall (LB)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Alexei Miassoedov (IAEA/NENP/NPTDS), Simone Massara (IAEA), Local Organiser: Nadia Binggeli

Cosponsor(s): International Atomic Energy Agencyiaea3

Support E-Mail: smr3481@ictp.it

**DEADLINE: 30/06/2020**

Europe/Rome https://zoom.us/j/475819702 Meeting ID: 475-819-702 If you haven't registered for previous QLS webinars, please contact qls@ictp.it to obtain the PASSWORD for this zoom meeting. Abstract: We provide a complete picture about mechanisms of unsupervised learning, i.e., in a simple neural network system, unsupervised learning can be interpreted as breaking a series of symmetries, driven by increasing observations. First, it is the spontaneous symmetry breaking starting the concept formation, then the permutation symmetry among hidden units is spontaneously broken, including in sequence two types: the student side is the first, and the teacher (planted truth) is the second. In this paper, we also analytically prove that the learning threshold in a simple neural network that triggers a spontaneous symmetry breaking (concept-formation) does not depend on the number of hidden neurons (here two for a minimal model) once this number is finite, for the correlation-free case. The underlying physics is the partition function factorization for which we give a proof. Moreover, our analytical result reveals that the weak correlation among receptive fields of hidden neurons significantly reduces the learning threshold, which is consistent with the non-redundant weight assumption popular in system neuroscience and machine learning! By studying the minimal model, we are excited to reveal the inner workings of unsupervised learning, a fundamental process governing artificial and biological intelligence. We expect this work may open doors towards physical laws governing neural learning. Zoom meeting ICTP pio@ictp.it

Seminar

6 Oct 2020

@ Zoom meeting

Quantitative Life Sciences

Physical laws of unsupervised learning in neural network

Speaker(s): Tianqi Hu (Department of Physics , HKUST )

Seminar Start Time: 15:00

Europe/Rome Register in advance for this meeting: https://zoom.us/meeting/register/tJwrcuuhqzspHtRXp1wiLbmEYk_EyWTBKbRm After registering, you will receive a confirmation email containing information about joining the meeting. Abstract: Milnor's fibration theorem is a landmark in singularity theory, it allows to deepen the study of the geometry and topology of analytic maps near their critical points. To each singular point of a complex hypersurface it associates a fibre bundle, known as the Milnor Fibration of the singularity. The birth of Milnor's Fibration Theorem is a curious story, since its origin is not in Singularity Theory. It begins with the discovery by Milnor in 1956 of the first exotic spheres": smooth 7-manifolds homeomorphic to the standard 7-sphere, but with non-equivalent differentiable structures. Later, work of some great mathematicians like Brieskorn, Jänich, Hirzebruch and Pham, led to the discovery of some examples of complex hypersurface singularities whose links are exotic spheres. This motivated Milnor to determine when the link of a complex hypersurface singularity is a homotopy sphere, culminating in his now famous book "Singular points of complex hypersurfaces". One of the main results in this book is precisely Milnor's Fibration Theorem. The aim of this non-technical talk is to tell this interesting story. Zoom Meeting ICTP pio@ictp.it

Seminar

8 Oct 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar: Exotic Spheres and Singularities

Speaker: José Cisneros-Molina (UNAM, Mexico)

Seminar Start Time: 16:00

Europe/Rome Note: ICTP has suspended all educational activities from 24 February as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx Dynamical Systems and Ergodic Theory constitute a vibrant and exciting field of current research in pure mathematics, with lots of connections to other areas such as probability theory, differential geometry, ODEs, and potential applications to such diverse areas as natural and biological sciences, economics, engineering, climate and disease modeling and many others. It can be thought of as a modern development of classical theories of Differential Equations and the fundamental concepts and guiding ideas go back more than a century to pioneering thinkers such as Poincaré, Birkhoff and Kolmogorov. Its interest and importance has only grown in time and several Fields Medals have been awarded in the area. The present Workshop is part of a long standing tradition of Dynamical Systems and Ergodic Theory activities at ICTP that was initiated by J. Palis and C. Zeeman in the early 1980s, and continued by Ya. Sinai, J.-C. Yoccoz and others. It will address a wide range of topics in this field, including: • dynamics of one-dimensional maps • homoclinic and heteroclinic behavior, fractal dimensions • partially hyperbolic systems, dominated splittings • singular hyperbolic flows • conservative dynamics, KAM theory • dynamics in homogeneous spaces • billiards, interval exchanges, Teichmüller flows • dynamics of rational and entire functions • symbolic dynamics, thermodynamic formalism • stochastic behavior of deterministic systems • Lyapunov exponents, nonuniform hyperbolicity The list of invited speakers reflects the diversity of these subjects. Their lectures will constitute the basis of the programme, but posters sessions are also planned, which will give participants an opportunity to present their works. Speakers: Artur AVILA, IMPA Rio de Janeiro and Zurich Pierre BERGER, Paris Christian BONATTI, Dijon Sylvain CROVISIER, Paris Danijela DAMJANOVIC, KTH, Stockholm Laura DEMARCO, Northwestern Lorenzo DIAZ, PUC, Rio de Janeiro Giovanni FORNI, Maryland Adam KANIGOWSKI, Maryland Holly KRIEGER, Cambridge Isabelle LIOUSSE, Lille Carlangelo LIVERANI, Rome Luna LOMONACO, IMPA, Rio de Janeiro Micheal LYUBICH, Stony Brook Alba MÁLAGA, ICERM, Brown Luca MARCHESE, Paris Stefano MARMI, Scuola Normale Pisa Gustavo MOREIRA, IMPA, Rio de Janeiro Maria Jose PACIFICO, UFRJ, Rio de Janeiro Liviana PALMISANO, Durham Enrique PUJALS, CUNY, New York and IMPA, Rio de Janeiro Federico RODRIGUEZ-HERTZ, Penn State Samuel SENTI, UFRJ, Rio de Janeiro Barabara SCHAPIRA, Rennes Khadim WAR, IMPA, Rio de Janeiro Amie WILKINSON, Chicago ICTP ICTP pio@ictp.it

Activity

12 Oct 2020 - 16 Oct 2020

@ ICTP

Mathematics

Workshop on Dynamical Systems * CANCELLED * | (smr 3420)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Budinich Lecture Hall (LB)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Jacopo De Simoi (Toronto, Canada), Corinna Ulcigrai (Zurich, Switzerland), Marcelo Viana (IMPA, Rio de Janeiro, Brazil), Local Organiser: Stefano Luzzatto

Support E-Mail: smr3420@ictp.it

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 15 May as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx Conference venue is Hotel Ponta Verde in Praia do Francês. Please, find detailed information on the local website. https://geometry-maceio.sciencesconf.org The "Workshop on Differential Geometry” has become a traditional event that takes place every year in the state of Alagoas, Brazil, during the Brazilian summer, congregating renowned international experts and members of the Brazilian geometry community. The 2020 edition will celebrate the 10th anniversary of the event, which has been organized since 2011 by the Institute of Mathematics of the Federal University of Alagoas (UFAL). There will be a balance of topics that are active in Brazil and research directions that need to be stimulated and further developed. In the first week 5 advanced mini courses will be given by international experts while the second week will be devoted to research seminars. Applicants should specify if they want to take part to only one of the two weeks of the Workshop. Topics: • Minimal surfaces, constant mean curvature surfaces • Kahler geometry, extremal metrics • Mathematical relativity, stability/rigidity phenomena • Mean curvature ow • Gluing and desingularization techniques, phase transition PDEs Minicourses: Lucas Ambrozio, University of Warwick Joel Fine, Université Libre de Bruxelles Laurent Hauswirth, Université de Marne-la-Vallée Celso Viana, University of California - Irvine Lu Wang, University of Wisconsin-Madison Invited Speakers: Sérgio Almaraz, Universidade Federal Fluminense Claudio Arezzo, International Centre for Theoretical Physics Gérard Besson, Institut Fourier - Université de Grenoble José María Espinar, Universidad de Cadiz Abigail Folha, Universidade Federal Fluminense Ailana Fraser, University of British Columbia Gregory Galloway, University of Miami Casey Kelleher, Princeton University* Levi Lima, Universidade Federal do Ceará Vanderson Lima, Universidade Federal do Rio Grande do Sul Jorge Lira, Universidade Federal do Ceará Andrea Loi, Università di Cagliari Andrea Malchiodi, Scuola Normale Superiore Ana Menezes, Princeton University Frank Pacard, École Polytechnique Paolo Piccione, Universidade de São Paulo Álvaro Ramos, Universidade Federal do Rio Grande do Sul Tristan Rivière, ETH Zürich Richard Schoen, University of California - Irvine Gang Tian, Beijing University Feliciano Vitorio, Universidade Federal de Alagoas Jun-cheng Wei, University of British Columbia Xi-Ping Zhu, Sun Yat-sen University *To be confirmed Attention for the 2nd week of the "Workshop on Differential Geometry - Week 2", 19 - 23 October 2020 go to link: http://indico.ictp.it/event/9228/ Maceio - Brazil ICTP pio@ictp.it

Activity

13 Oct 2020 - 16 Oct 2020

@ Maceio - Brazil

Mathematics

Workshop on Differential Geometry Week 1 * POSTPONED * | (smr 3431)

Secretary: Susanne Henningsen

Organizer(s): Marcos Petrucio Cavalcante (Federal University of Alagoas), Fernando Codá Marques (Princeton), ICTP Scientific Contact: Claudio Arezzo

Cosponsor(s): Coordination for the Improvement of Higher Education Personnelcapes, Brazilian National Council for Scientific and Technological Developmentcnpq, Instituto Nacional de Ciência e Tecnologia de Matemáticainctmat, Sociedade Brasileira de Matemáticasbm, Fundação de Amparo à Pesquisa do Estado de Alagoasfapeal, Universidade Federal de Alagoasufal

Europe/Rome Zoom webinar. When: Oct 13, 2020 04:00 PM Rome Topic: AI colloquia Register in advance for this webinar: https://zoom.us/webinar/register/WN_qidXVl5URkKbG5kJUAMB0A After registering, you will receive a confirmation email containing information about joining the webinar. Should you not be able to join the Webinar, the Colloquium is also available in live streaming at: http://ictp.it/livestream Abstract Machine learning on embedded hardware is a new field that's only beginning to be used in the developed world, but it has some characteristics that may make it particularly appropriate for developing countries. The hardware and software required to train students, advance research, and build products is much cheaper than the equivalents for Cloud ML, and since the devices don't need reliable network or even mains power connections, they can be deployed almost anywhere. Pete Warden is the Technical Lead of the TensorFlow Micro open source project from Google, and has previously helped projects like Plant Village use on-device deep learning in West Africa. In this talk he'll introduce some of the possibilities that edge compute opens up for the world outside the West, and will be looking to learn from the audience what problems in their domains it might be applicable to. Zoom meeting ICTP pio@ictp.it

Seminar

13 Oct 2020

@ Zoom meeting

Quantitative Life Sciences

ICTP QLS-AP Colloquium AI / How TinyML Could Help Developing Countries

Speaker(s): Pete Warden (Google) is Lead of the TensorFlow Mobile/Embedded team at Google. He was senior engineer at Apple and CTO of Jetpac. He is the author of the Data Source and of the TinyML handbooks for O'Reilly.

Seminar Start Time: 16:00

Europe/Rome John Michael Kosterlitz, is a British-born American physicist who was awarded the 2016 Nobel Prize in Physics for his work in using topology to explain superconductivity in two-dimensional materials. He shared the prize with British-born American physicists David Thouless and Duncan Haldane. Kosterlitz studied at Gonville and Caius College, Cambridge, earning his BA and MA before moving to Brasenose College, Oxford, where he gained his DPhil in 1969. He performed post-doctoral work with David Thouless at the University of Birmingham and, building on work by Russian physicist Vadim Berezinskii (1935-1980), they discovered the Berezinskii–Kosterlitz–Thouless phase transition of two-dimensional models at low temperature. He also worked at Cornell University, New York, before being appointed as lecturer, senior lecturer and reader at Birmingham in 1974. In 1982 he moved to the US as professor of physics at Brown University in Providence, Rhode Island. The 2016 Nobel Laureates in the field of physics – David Thouless, Duncan Haldane and Michael Kosterlitz – demonstrated how materials can be understood in terms of the mathematical principles of topology, a modern form of geometry that studies different sorts of spaces. A topological surface is partly defined by how many holes there are. In topological terms, a doughnut and a cup are the same (both having one hole), but a ball is different. Its importance here is that it explains why electrical conductivity inside thin layers changes in integer steps. The work of the three laureates was a watershed in understanding and calculating the properties of material systems, and it is thought it may pave the way for a new generation of quantum computers. Apart from the Nobel Prize, Kosterlitz was awarded the Maxwell Medal and Prize by the British Institute of Physics in 1981 and the Lars Onsager Prize from the American Physical Society in 2000. He is also a Fellow of the American Physical Society, Fellow of the American Academy of Arts and Sciences and elected in 2017 to the National Academy of Sciences. Abstract: The talk is the story of my random walk through physics via Cambridge, Oxford, Turin and Birmingham finishing up at Brown University. I describe my very crooked path through life including physics and my other life as a mountaineer. I also include a somewhat simplified version of my prize winning work. The talk will be followed by a question/answer session. This SISSA-ICTP Joint Colloquium will be held via Zoom webinar. Pre-registration is required at the following url: https://sissa-it.zoom.us/webinar/register/WN_g9-dK5ARRMOvyyYVl_1NfA After registering, you will receive a confirmation email containing information about joining the webinar. Zoom ICTP pio@ictp.it

Colloquium

14 Oct 2020

@ Zoom

SISSA-ICTP Colloquium by Prof. John Michael Kosterlitz, Brown University, USA on "A Random Walk Through Physics To The Nobel Prize"

Room: Online

Speaker(s): Prof. John Michael Kosterlitz, Brown University, USA

Colloquium Start Time: 16:00

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJIoc-2hrToqE9VuShkX6fIPbYjmqTAsSoD1 After registering, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it

Seminar

15 Oct 2020

@ Zoom Meeting

Strings and Higher Dimensional Theories

Towards a microscopic model of AdS fragmentation

Speaker(s): Tarek Anous (University of Amsterdam)

Abstract. A salient feature of black holes near extremality is the appearance of an AdS$_2$ throat in their near-horizon geometry. Depending on the underlying theory, these AdS$_2$ throats may be unstable to fragmentation, wherein a single throat is instead replaced by a tree-like structure of branched AdS$_2$ throats. For Einstein-Maxwell theory, the underlying reason behind this instability is the existence of multi-centered configuration in the moduli space of black hole solutions at fixed total charge. Given the success of the Schwarzian/SYK paradigm for understanding a single AdS$_2$ it is time to revisit the fragmentation story. To build up intuition, I will present a model, studied in the statistical mechanics literature, that shares many features with SYK, including exact solvability at large-N and an emergent conformal symmetry that gets weakly broken in the UV. The novel feature of this model is the appearance of a spin glass phase at O(1) temperatures, which I will try to relate to the fragmentation story.

Seminar Start Time: 14:30

Europe/Rome A Joint ICTP-IAEA Virtual Meeting The workshop will bring together researchers from materials sciences focusing on the design of cement-based materials to enhance durability of nuclear waste immobilisation for disposal. The workshop will focus on research information to enhance durability of cement based nuclear wasteforms for disposal. Information presented will assist other experts from nuclear energy research sectors, materials science and waste management departments regarding properties of cementitious materials and potential of cement science and technology for the long-term immobilisation of radioactive waste. Topics: Specific topical areas within the scope of the workshop include: Basics of cement chemistry (including curing mechanism); Different cement phase-waste interactions (designing of cement matrix for waste composition; Formulation and characterization of cement-based matrices; Technological approaches of waste cementation (advantages and drawbacks of the different types of processes); Chemical durability and long-term performance: experimental and modelling approaches; Retention of radionuclides by cementitious materials; Behaviour of cement-based materials under irradiation; Influence of geochemistry of disposal site on durability of disposed cementitious matrixes; Potential of alternative binders (alkali-activated binders, phosphate binders, calcium aluminate and sulfoaluminate binders) for the conditioning of deleterious wastes. A number of short oral presentation slots will be available for some participants upon selection. Speakers: R. O. ABDELRAHMAN, AEA, Egypt M. ASMUSSEN, PNNL, USA C. CAU DIT COUMES, CEA, France L. CHOMAT, CEA, France C. LANGTON, Savannah River National, USA W. MEYER, IAEA, NEFW, Austria M. I. OJOVAN, Imperial College London, UK V. A. PETROV, IGEM RAS, Russia V. G. PETROV, MSU, Russia J. PROVIS, The University of Sheffield, UK N. RAKHIMOVA, Kazan State University, Russia A. P. VARLAKOV, VNIINM, Russia Online - ICTP pio@ictp.it

Activity

16 Oct 2020 - 25 Nov 2020

@ Online -

Joint ICTP-IAEA International School on Radioactive Waste Cementation | (smr 3484)

Room: Online

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Celine Cau Dit Coumes (CEA), Ian A. Gordon (IAEA, NEFW), Willie Meyer (IAEA, NEFW), Michael I.Ojovan (Imperial College London), Rebecca A. Robbins (IAEA, NEFW), Local Organiser: Sandro Scandolo

Cosponsor(s): International Atomic Energy Agencyiaea3

Support E-Mail: smr3484@ictp.it

**DEADLINE: 21/09/2020**

Europe/Rome Note: ICTP has suspended all educational activities from 24 February up to 26 June as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx Conference venue is Hotel Ponta Verde in Praia do Francês. Please, find detailed information on the local website. https://geometry-maceio.sciencesconf.org The "Workshop on Differential Geometry” has become a traditional event that takes place every year in the state of Alagoas, Brazil, during the Brazilian summer, congregating renowned international experts and members of the Brazilian geometry community. The 2020 edition will celebrate the 10th anniversary of the event, which has been organized since 2011 by the Institute of Mathematics of the Federal University of Alagoas (UFAL). There will be a balance of topics that are active in Brazil and research directions that need to be stimulated and further developed. In the first week 5 advanced mini courses will be given by international experts while the second week will be devoted to research seminars. Applicants should specify if they want to take part to only one of the two weeks of the Workshop. Topics: • Minimal surfaces, constant mean curvature surfaces • Kahler geometry, extremal metrics • Mathematical relativity, stability/rigidity phenomena • Mean curvature ow • Gluing and desingularization techniques, phase transition PDEs Minicourses: Lucas Ambrozio, University of Warwick Joel Fine, Université Libre de Bruxelles Laurent Hauswirth, Université de Marne-la-Vallée Celso Viana, University of California - Irvine Lu Wang, University of Wisconsin-Madison Invited Speakers: Sérgio Almaraz, Universidade Federal Fluminense Claudio Arezzo, International Centre for Theoretical Physics Gérard Besson, Institut Fourier - Université de Grenoble José María Espinar, Universidad de Cadiz Abigail Folha, Universidade Federal Fluminense Ailana Fraser, University of British Columbia Gregory Galloway, University of Miami Casey Kelleher, Princeton University* Levi Lima, Universidade Federal do Ceará Vanderson Lima, Universidade Federal do Rio Grande do Sul Jorge Lira, Universidade Federal do Ceará Andrea Loi, Università di Cagliari Andrea Malchiodi, Scuola Normale Superiore Ana Menezes, Princeton University Frank Pacard, École Polytechnique Paolo Piccione, Universidade de São Paulo Álvaro Ramos, Universidade Federal do Rio Grande do Sul Tristan Rivière, ETH Zürich Richard Schoen, University of California - Irvine Gang Tian, Beijing University Feliciano Vitorio, Universidade Federal de Alagoas Jun-cheng Wei, University of British Columbia Xi-Ping Zhu, Sun Yat-sen University *To be confirmed Attention for the 1st week of the "Workshop on Differential Geometry - Week 1", 12 - 16 October 2020 go to link: http://indico.ictp.it/event/9028/ Maceio - Brazil ICTP pio@ictp.it

Activity

19 Oct 2020 - 23 Oct 2020

@ Maceio - Brazil

Mathematics

Workshop on Differential Geometry Week 2 * POSTPONED * | (smr 3503)

Secretary: Susanne Henningsen

Organizer(s): Feliciano Vitorio (Federal University of Alagoas), Abraão Mendes (Federal University of Alagoas), Marcio Batista (Federal University of Alagoas), Marcos Petrucio Cavalcante (Federal University of Alagoas), ICTP Scientific Contact: Claudio Arezzo

Europe/Rome Please register in advance for this meeting at: https://zoom.us/meeting/register/tJUode6rqDIjEtRTaio6W44vBuk6IypQbWQ8 After registering, you will receive a confirmation email containing information about joining the meeting. ZOOM Meeting ICTP pio@ictp.it

Seminar

20 Oct 2020

@ ZOOM Meeting

Phenomenology of Particle Physics

Boosting Ultraviolet Freeze-in Dark Matter

Speaker(s): Nicolas Bernal Hernandez (UAN, Bogota', Colombia)

Seminar Start Time: 14:30

Europe/Rome https://zoom.us/j/475819702 Meeting ID: 475-819-702 If you haven't registered for previous QLS webinars, please contact qls@ictp.it to obtain the PASSWORD for this zoom meeting. Abstract: Microbial communities play myriad roles in ecosystems, from fixing atmospheric nitrogen, to recycling organic matter to promoting host health. In many cases, e.g. in the human gut ecosystem, these communities display alternative stable states associated to health and dysbiosis. Not only this, but our daily life commonly gives rise to perturbations (changes in diet, infections, or exposure to antibiotics) that can induce community shifts towards alternative stable states. However, the mechanisms driving these shifts are, in general, poorly understood. In this talk, I will introduce an experimental model system that I use to interrogate, quantitatively, microbial community resilience to perturbations and transitions between stable states. I will show that the arrival of an invader species can often trigger transitions between stable states of microbial communities, even if the invader itself does not survive the transition. I will also describe ongoing work in which I expose this model community to antibiotic perturbations. In this case, our theoretical model predicts, and experiments confirmed, that ecological parameters such as growth and migration rates can be more important in determining the response of the community than the specific kind of antibiotics that is being used. Zoom meeting ICTP pio@ictp.it

Seminar

20 Oct 2020

@ Zoom meeting

Quantitative Life Sciences

How do microbial communities respond to perturbations?

Speaker(s): Daniel Amor (MIT)

Seminar Start Time: 15:00

Europe/Rome After many years of successful PWF programmes across South America, six excellent physics students have been identified to work with supervisor Arturo Sanchez (ICTP, PWF Latin America group, CEVALE2VE) on a MSc equivalent thesis in High Energy Physics (HEP) using ATLAS Open Data. The created PWF resources will be created in Spanish and made available online for public use. ICTP ICTP pio@ictp.it

Seminar

22 Oct 2020

@ ICTP

PWF South America Master Thesis Project

Seminar Start Time: 12:00

Europe/Rome Abstract: Water is often considered as the Elixir of life. Despite long study, the physical and chemical principles underlying its fundamental properties as well as its special status in the origin of life problem, continues to be a subject of lively debate. In this talk, I will attempt to challenge some notions on the requirement of water in prebiotic chemistry and provide some broader perspectives on open problems in aqueous science. Some of the essential ingredients of the primordial soup include the presence of molecular networks involving hydrogen bonds and an assortment of different types of interfaces. In this context, atomistic simulations have played an important role in providing a microscopic picture of the important interactions and fluctuations that sustain the life of molecules in solution. Specifically, I will show how molecular simulations combined with smart data mining and stochastic theory, can reveal non-trivial properties ranging from the branched empty spaces in liquids, the topology of networks at hydrophobic surfaces and finally to the dynamical fingerprints of water near biological surfaces. I will try to contextualize some of these phenomena within the origin of life problem with some cautious speculations on the role of other liquids in prebiotic chemistry. Virtual ICTP pio@ictp.it

Seminar

23 Oct 2020

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (News and Views): Will Aliens Drink Water?

Speaker(s): Ali Hassanali (ICTP, Trieste, Italy)

Seminar Start Time: 11:00

Activity

26 Oct 2020 - 6 Nov 2020

@ Addis Ababa - Ethiopia

Earth System Physics

Integrating Climate Data, Predictions and Projections into Health Planning - CANCELLED | (smr 3442)

Secretary: Susanne Henningsen

Organizer(s): Solomon Gizaw (University of Addis Ababa), Mike Wimberly (University of Oklahoma, USA), Madeleine Thomson (IRI, USA), Addisu Semie (LMD, Paris, France), ICTP Scientific Contact: Adrian Tompkins

Europe/Rome Please register in advance for this meeting at: https://zoom.us/meeting/register/tJAkcOCtrzwqH915n4hTqkZtxtIn9bXddpXh After registering, you will receive a confirmation email containing information about joining the meeting. Zoom Meeting ICTP pio@ictp.it

Seminar

27 Oct 2020

@ Zoom Meeting

Phenomenology of Particle Physics

A multi-messenger approach to answer "Where do IceCube neutrinos come from?"

Speaker(s): Arman Esmaili (PUC, Rio de Janeiro, Brazil)

Abstract. The observation of astrophysical neutrinos by IceCube opened a new window on our Universe and at the same time confronted us with an important, and yet unanswered, question: where do these neutrinos come from? In this talk I discuss a multi-messenger approach to answer this question, focusing on the neutrino/gamma-ray connection. It will be shown that, using the EGB data already collected by Fermi-LAT, stringent constraints on the source(s) properties, such as the opacity and redshift distribution, can be derived. The challenges in reconciling the EGB and IceCube data will be discussed.

Seminar Start Time: 14:30

Europe/Rome https://zoom.us/j/475819702 Meeting ID: 475-819-702 If you haven't registered for previous QLS webinars, please contact qls@ictp.it to obtain the PASSWORD for this zoom meeting. Abstract: <span lang="EN-US" style="font-size:12.0pt;line-height:107%; font-family:"Arial",sans-serif;mso-fareast-font-family:Calibri;mso-fareast-theme-font: minor-latin;mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language: AR-SA">Liquid-liquid phase separation (LLPS) of biopolymers recently emerged as a ubiquitous driving force for intracellular self-assembly. The resulting LLPS dynamics appear to orchestrate wide-ranging cellular mechanisms, from genome organization to cell division. Despite remarkable progress, studying intracellular LLPS remains challenging. In this talk, I will present our recent progress towards dissecting the LLPS of intrinsically-disordered proteins (IDPs) and its biological significance. I will highlight our two main approaches: (1) the engineering of lower and upper critical solution temperature (LCST and UCST, respectively) LLPS behavior in IDPs (Nature Materials 2015, Science Advances 2019), and (2) the probing of intracellular LLPS dynamics in mammalian skin (Science 2020). Dwelling on skin, I will explain how the biophysical lens of LLPS sheds new light into the enigmatic process of skin barrier formation. Using this system, I will also describe novel biomolecular tools to probe LLPS in tissue biology. Finally, I will discuss engineered IDPs that exhibit non-equilibrium LLPS. These behaviors differ from the established biophysical frameworks to study LLPS of IDPs, which were inspired by work on synthetic polymers that exhibit equilibrium LLPS. Overall, my goal is to inspire students and scientists at ICTP to connect with the research frontier of cellular mechanisms driven by LLPS. This nascent field offers fruitful ground for exploration of experimental and theoretical biophysical approaches. Zoom meeting ICTP pio@ictp.it

Seminar

27 Oct 2020

@ Zoom meeting

Quantitative Life Sciences

Dissecting liquid-liquid phase separation in engineered and biological systems

Speaker(s): Felipe G. Quiroz / Assistant Professor of Biomedical Engineering at Georgia Institute of Technology and Emory University. Dr. Quiroz and his team mine protein self-assembly in engineered and biological material systems. He currently holds a Career Award at the Scientific Interface from Burroughs Wellcome Fund

Seminar Start Time: 16:00

Europe/Rome Please register in advance for this meeting at: https://zoom.us/meeting/register/tJUtcOCtqj8qHNetaht08wfkq7W2xydyMRBU After registering, you will receive a confirmation email containing information about joining the meeting. Zoom meeting ICTP pio@ictp.it

Seminar

29 Oct 2020

@ Zoom meeting

Strings and Higher Dimensional Theories

The wavefunction of the universe and the emergence of unitarity and causality from its combinatorics

Speaker(s): Paolo Benincasa (Niels Bohr Institute, University of Copenhagen and IFT Madrid)

Seminar Start Time: 14:30

Europe/Rome Physics Without Frontiers presents the Expository Quantum Lecture Series initiated by local theoretical physicists associated with the Institute for Mathematical Research (INSPEM) and Faculty of Science in Universiti Putra Malaysia (UPM).The purpose of this programme is to rapidly introduce students to frontier topics in quantum information by inviting international prominent researchers in the relevant area. The programme will be conducted online via Zoom platform. The programme will provide hands-on training through analysis and problem-solving sessions and educate students about careers and opportunities in research. https://einspem.upm.edu.my/equals2020/ Universiti Putra Malaysia ICTP pio@ictp.it

Seminar

2 Nov 2020 - 6 Nov 2020

@ Universiti Putra Malaysia

Expository Quantum Lecture Series 2020

Speakers: Prof Kwek Leong Chuan, Centre for Quantum Technologies, SINGAPORE Prof Andrew Childs, University of Maryland, UNITED STATES Prof Farhan Saif, Quaid-i-Azam University, Islamabad, PAKISTAN Prof Nathan Langford, University of Technology, Sydney, AUSTRALIA Prof Loh Huanqian, National University Singapore, SINGAPORE Dr Aitor Vilar Zafra, SpeQtral Space, SINGAPORE

Seminar Start Time: 01:00

Europe/Rome Note: ICTP has suspended all educational activities from 24 February to 15 May as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx The School has been CANCELLED. Collective behavior is a distinctive trait of human and animal societies. The School aims at providing a thorough introduction to basic notions and advanced topics in this subject from the viewpoints of physics, biology, computer science and robotics. Provisional list of Speakers: Iain Couzin, Max Planck Institute of Animal Behavior, Konstanz Deborah Gordon, Stanford University Marcelo Magnasco, Rockefeller University, New York Melanie Moses, University of New Mexico David Sumpter, University of Uppsala Guy Theraulaz, CRCA, Toulouse Havana - Cuba ICTP pio@ictp.it

Activity

2 Nov 2020 - 13 Nov 2020

@ Havana - Cuba

Quantitative Life Sciences

School on Collective Animal Behaviour CANCELLED | (smr 3432)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Roberto Mulet (University of Havana, Cuba), Ernesto Altshuler (University of Havana, Cuba), ICTP Scientific Contact: Antonio Celani

Support E-Mail: smr3432@ictp.it

Europe/Rome Please register in advance for this meeting: https://zoom.us/meeting/register/tJMkceyqqD0oE9anfmRsSmOsxfmwgHcT3Qlh After registering, you will receive a confirmation email containing information about joining the meeting. ZOOM Meeting ICTP pio@ictp.it

Seminar

3 Nov 2020

@ ZOOM Meeting

Phenomenology of Particle Physics

Sub-GeV Dark Matter through Assisted Annihilation

Speaker(s): Tirtha Sankar Ray (IIT, Kharagpur, India)

Abstract. In this talk the Assisted Annihilation framework that generates thermal sub-GeV dark matter through a novel annihilation between pairs of dark matter and standard-model-like states, called the "assister" will be presented. The feasibility of such non-standard annihilation topology to reproduce the observed relic density of dark matter while remaining in consonance with cosmological bounds will be discussed in a model independent way. A simple multipartite scalar extension of the Standard Model where Assisted Annihilation can dominantly drive the thermal freeze out of dark matter in certain regions of the parameter space will be sketched. It is demonstrated that for photophilic assisters these models may be probed by indirect detection and fixed target experiments.

Seminar Start Time: 14:30

Europe/Rome https://zoom.us/j/475819702 Meeting ID: 475-819-702 If you haven't registered for previous QLS webinars, please contact qls@ictp.it to obtain the PASSWORD for this zoom meeting. Abstract: The development of mechanosensory epithelia, such as those of the auditory and vestibular systems, results in the precise orientation of mechanosensory hair cells and consequently directional sensitivity. After division of a precursor cell in the zebrafish's lateral line, the daughter hair cells differentiate with opposite mechanical sensitivity. This process produces neuromasts containing equal numbers of hair cells of two opposite polarities, half of them sensitive to caudal water movement and half to rostral flow. Through a combination of theoretical and experimental approaches, we show that Notch-mediated lateral inhibition produces a bistable switch that reliably gives rise to hair cell pairs of opposite polarity. Using a mathematical model of the process, we predict the outcome of several genetic and chemical alterations to the system, which we then confirm experimentally. Zoom meeting ICTP pio@ictp.it

Seminar

3 Nov 2020

@ Zoom meeting

Quantitative Life Sciences

Symmetry breaking during morphogenesis of a mechanosensory organ

Speaker(s): Adrian Jacobo, The Rockefeller University · Laboratory of Sensory Neuroscience, USA

Seminar Start Time: 16:00

Europe/Rome This online school is the first in a series of events to be held during 2021 under the joint title “The Hitchhiker's Guide to Condensed Matter and Statistical Physics” whose goal is to sketch a roadmap of current exciting research directions in Condensed Matter and Statistical Physics. These events are aimed at advanced undergraduate and graduate students, as well as young researchers interested in learning more about different subjects, both from the developing world and elsewhere. The lectures will be held once a week over 4 weeks in January and February 2021 and will lead the students from basic notions to the open problems in each topic. Each week one of the four lecturers will present 1h of basic notions + 1h of a colloquia style lecture, with ample time for discussions. The first series of lectures will be dedicated to Machine Learning (ML) and its intersections with Condensed Matter and Statistical Physics. How can statistical physics help in understanding the theory behind ML techniques? What are the most fruitful applications of ML methods to condensed matter physics? The lectures will answer these and other questions related to ML and many-body quantum systems, quantum computing, and material physics. Online - ICTP pio@ictp.it

Activity

4 Nov 2020 - 25 Nov 2020

@ Online -

Condensed Matter and Statistical Physics

The Hitchhiker's Guide to Condensed Matter and Statistical Physics:Machine Learning for Condensed Matter * POSTPONED * | (smr 3588)

Room: Online

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Alejandro Rodriguez Garcia (ICTP), Antonello Scardicchio (ICTP), Ali Hassanali (ICTP), Rosario Fazio (ICTP), Local Organiser: Asja Jelic

Support E-Mail: smr3588@ictp.it

Europe/Rome Controlling the spread of correlations in quantum many-body systems is a key challenge at the heart of quantum science and technology. Desired correlations are usually destroyed by dissipation arising from coupling between a system and its environment. Here, we show that dissipation can instead be used to engineer a wide variety of spatio-temporal correlation profiles in an easily tunable manner that is not possible using purely unitary dynamics. We describe how dissipation with any translationally-invariant spatial profile can be realized in cold atoms trapped in an optical cavity. A uniform external field and the choice of spatial profile can be used to design when and how dissipation creates or destroys correlations. We demonstrate this control by preferentially generating entanglement at a desired 'wavelength'. We thus establish spatially inhomogeneous dissipation as a new route towards engineering the far-from-equilibrium dynamics of quantum information, with potential applications in quantum metrology, state preparation, and transport. Virtual ICTP pio@ictp.it

Seminar

4 Nov 2020

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Statistical Physics): Spatio-temporal Control of Correlations via Inhomogeneous Dissipation

Speaker(s): Jamir MARINO (Johannes Gutenberg-Universität Institut für Physik, Mainz, Germany)

Seminar Start Time: 14:00

Activity

9 Nov 2020 - 13 Nov 2020

@ ICTP

Earth System Physics

Impact and Risk Relevant Climate Information from Global Scale Projections to Local Scale Climate Hazards * POSTPONED * | (smr 3450)

Address: strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Budinich Lecture Hall, Euler Lecture Hall, Stasi Seminar Room, LB Informatics Lab

Secretary: Susanne Henningsen, Pandora Malchose

Organizer(s): Robert Vautard (IPSL), Alex Ruane (NASA), Roshanka Ranasinghe (IHE), Local Organiser: Erika Coppola

Cosponsor(s): The International Union of Geodesy and Geophysicsiugg4

Hosted Activity

9 Nov 2020 - 13 Nov 2020

@ Trieste - Italy

Science Diplomacy Alumni Review Meeting | (smr H623)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Organizer(s): TWAS,

Europe/Rome We consider the entanglement entropies of energy eigenstates in quantum many-body systems. For the typical models that allow for a field-theoretical description of the long-range physics, we find that the entanglement entropy of (almost) all eigenstates is described by a single scaling function. This is predicated on the applicability of the weak or strong eigenstate thermalization hypothesis (ETH), which then implies that the scaling functions can be deduced from subsystem entropies of thermal ensembles. The scaling functions describe the full crossover from the ground state entanglement regime for low energies and small subsystem size (area or log-area law) to the extensive volume-law regime for high energies or large subsystem size. For critical 1d systems, the scaling function follows from conformal field theory (CFT). We use it to also deduce the scaling function for Fermi liquids in d>1 dimensions. These analytical results are complemented by numerics for large non-interacting systems of fermions in d=1,2,3 and the harmonic lattice model (free scalar fieldtheory) in d=1,2. Lastly, we demonstrate ETH for entanglement entropies and the validity of the scaling arguments in integrable and non-integrable interacting spin chains. In particular, we analyze the XXZ and transverse-field Ising models with and without next-nearest-neighbor interactions. References: arXiv:1905.07760, arXiv:1912.10045, arXiv:2010.07265 Virtual ICTP pio@ictp.it

Seminar

10 Nov 2020

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Statistical Physics): Entanglement Entropy of Energy Eigenstates Follows a Universal Scaling Function

Speaker(s): Thomas BARTHEL (Duke University, Quantum Information Science, Durham NC 277708, U.S.A.)

Seminar Start Time: 11:00

Europe/Rome https://zoom.us/j/475819702 Meeting ID: 475-819-702 If you haven't registered for previous QLS webinars, please contact qls@ictp.it to obtain the PASSWORD for this zoom meeting. Abstract: Morphogenesis, mechanics, and malignancy: How complex tissue architectures arise in cancers Tissues are precisely built in their three-dimensional shape and the arrangement of specific cell types. This architecture breaks down as cancer-causing mutations transform normal tissue into tumor. How these architectural changes occur – through biophysical forces and gene regulatory networks that must coordinate across length and time scales – is a fundamental question in developmental and cancer biology. In this talk, I will discuss recently discovered mechanisms of mammalian tumor morphogenesis. Using a combination of computational modeling, genetic manipulations and biophysical measurements in vivo, I will describe how the biophysical drivers of tumor morphogenesis are distinct between simple monolayer and multilayered epithelia, and how initial architecture of the tissue-of-origin influences tumor morphogenesis. Our findings suggest that mechanical forces surrounding the proliferative cells within the tumor, so-called ‘cancer stem cells’, shape architecture of premalignant tumors and ultimately influence their progression into malignant cancer. Zoom meeting ICTP pio@ictp.it

Seminar

10 Nov 2020

@ Zoom meeting

Quantitative Life Sciences

Morphogenesis, mechanics, and malignancy: How complex tissue architectures arise in cancers

Speaker(s): Vincent Fiore Rockefeller U.

Seminar Start Time: 16:00

Europe/Rome Note: ICTP has suspended all educational activities from 24 February as precautionary measures due to COVID-19; more details at https://www.ictp.it/about-ictp/media-centre/news/2020/2/ictp_suspend_activities.aspx There is an increasing number of requests from Member States for assistance in the introduction of stereotactic radiotherapy and radiosurgery for intra-and extra-cranial targets. This workshop will assist clinical medical physicists to understand the complexities of this mode of radiotherapy. Modern radiotherapy has substantially increased the use of various forms of stereotactic radiotherapy such as Stereotactic Radiotherapy (SRT), Stereotactic Body Radiotherapy (SBRT) and Stereotactic Radiosurgery (SRS). For these techniques a high radiation dose is delivered in a reduced number of fractions. These treatments are not only performed with specialized, dedicated machines, but also with conventional, non-dedicated linear accelerators equipped with high resolution multi-leaf collimators. In radiotherapy, accurate dose delivered to the patient is essential. For conventional radiotherapy this has been achieved by internationally adopted codes of practice and standardized radiotherapy techniques. However, many of these techniques are not applicable for stereotactic radiotherapy. This course will instruct the participant on how to ensure the quality of stereotactic radiotherapy to provide patients with safe and effective treatments. Topics: Justification for using stereotactic radiotherapy (SRT). The physics of (SRT) with an emphasis on small field dosimetry. Simulation and Treatment planning for SRT. Treatment delivery of SRT to include the technologies, motion management and image guidance. Radiobiology of SRT including fractionation and dose constraints. Audits, Clinical trials and quality control. Prerequisites: This workshop is for clinically qualified medical physicists (CQMPs as per IAEA publication HHS25) from United Nations, UNESCO or IAEA Member States who hold a postgraduate-level university degree, preferably in medical physics. The candidate should also have at least 3 years working experience in a hospital and must participate in stereotactic radiotherapy in the clinic. Participants should have an understanding of IAEA TRS-398, ‘Absorbed dose determination in external beam radiotherapy’ and IAEA TRS483, “Dosimetry of small static fields used in external beam radiotherapy”. The process of selection of participants might include a mandatory written examination. The workshop will be beneficial to clinical medical physicists working in radiotherapy and employing treatment modalities using small fields such as SRT, SBRT and Stereotactic Radiosurgery SRS. Grants: A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee. ICTP ICTP pio@ictp.it

Activity

12 Nov 2020 - 16 Nov 2020

@ ICTP

Joint ICTP-IAEA Workshop on Medical Physics Aspects of Stereotactic Radiotherapy Techniques * CANCELLED * | (smr 3492)

Address: via Grignano, 9 I - 34151 Trieste (Italy)

Room: Giambiagi Lecture Hall (AGH)

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Karen Christaki (IAEA), Local Organiser: Renato Padovani

Cosponsor(s): International Atomic Energy Agencyiaea, American Association of Physicsts in Medicineaapm

Support E-Mail: smr3492@ictp.it

Europe/Rome Register in advance for this meeting: https://zoom.us/meeting/register/tJArdu6trjosH9dJ_bigMnqq9TwkMX3BP5g7 After registering, you will receive a confirmation email containing information about joining the meeting. Abstract: not available. Zoom Meeting ICTP pio@ictp.it

Seminar

12 Nov 2020

@ Zoom Meeting

Mathematics

Math Associates Seminar: Reaction diffusion equations on evolving domains: regularity and global existence

Speaker: Jyotshana Prajapat (University of Mumbai)

Seminar Start Time: 14:00

Europe/Rome Please register in advance for this meeting at: https://zoom.us/meeting/register/tJMsceqqrDIsGtSMhvbWRm6I9S6djxv6vhUu After registering, you will receive a confirmation email containing information about joining the meeting. Zoom meeting ICTP pio@ictp.it

Seminar

12 Nov 2020

@ Zoom meeting

Strings and Higher Dimensional Theories

Wilson loops, q-Virasoro and Hermitian matrix models

Speaker(s): Luca Cassia (Uppsala University, Sweden)

Abstract. The BPS/CFT correspondence predicts that the partition function and other BPS observables in a 3d N=2 gauge theory can be mapped to states in a q-deformed CFT, i.e. a theory whose symmetry algebra is q-Virasoro. Following this logic, we derive q-Virasoro constraints for the generating functions of 1/2-BPS Wilson loops for a family of 3d N=2 gauge theories. Under certain assumptions on the Chern-Simons level and the number of flavors we show that a complete solution can be obtained via a recursion formula. Furthermore, we show that the generating function admits a semi-classical expansion around an Hermitian matrix model with polynomial potential of degree equal to the number of flavors. Finally, we compute expectation values of Macdonald polynomials and a character expansion for the generating function. The talk is based on https://arxiv.org/abs/2007.10354.

Seminar Start Time: 14:30

Europe/Rome One of the key challenges in the development of quantum technologies is the control of light-matter interaction at the quantum level where individual excitations matter. During the past couple of decades, there has been tremendous progress in controlling individual photons and other excitations such as spin, excitonic, phononic in solid-state systems. Such efforts have been motivated to develop quantum technologies such as quantum memories, quantum transducers, quantum networks, and quantum sensing. While these efforts have been mainly focused on control and manipulation of individual excitations (i.e., single-particle physics), both desired and undesired many-body effects have become important. Therefore, it is intriguing to explore whether these quantum optical control techniques could pave a radically new avenue to prepare, manipulate, and detect non-local and correlated electronic states, such as topological ones. In this talk, I discuss several examples for such ideas, from optically-enhanced and -induced superconductivity to cavity-QED properties of quantum Hall states. Register in advance for this meeting: https://zoom.us/meeting/register/tJ0pc-CgqDgrE9ZOwMuUv50c6DFMf2bq-5JT After registering, you will receive a confirmation email containing information about joining the meeting. Virtual ICTP pio@ictp.it

Seminar

12 Nov 2020

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (News and Views): Quantum optics toolbox for correlated electron systems

Speaker(s): Mohammad HAFEZI (University of Maryland, Departments of ECE and Physics)

Seminar Start Time: 16:00

Europe/Rome Poly(N-isoproylacrylamide) (PNIPAM) is a synthetic polymer which has attracted considerable attention in the last years due to its responsive behavior. Indeed, its capability to reversibly respond to external stimuli, such as temperature, makes it a promising candidate to design smart materials with targeted functions. In addition to temperature, pressure can also promote phase separation of PNIPAM in aqueous solution, but its role has been much less investigated so far. In this talk I will report a comprehensive molecular investigation of PNIPAM phase diagram obtained through extensive all-atom molecular dynamics simulations [1]. By analyzing the solution behavior of an atactic polymer chain at infinite dilution in a wide range of temperatures and pressures, I will show that both temperature and pressure induce a conformational transition of PNIPAM, but through different molecular mechanisms. Moreover, I will provide a description of the reentrant behavior of the coil-to-globule transition with increasing pressure, showing the presence of two different shrunken states at low and high pressures, in full qualitative agreement with experimental observations [2,3]. Overall, this work highlights the non-trivial interplay between temperature and pressure, which, when combined together, give rise to unexpected behaviors. * * * Register in advance for this meeting: https://zoom.us/meeting/register/tJUudOqhrzgiGtbBa2ymfrop4dDy47NlolQo After registering, you will receive a confirmation email containing information about joining the meeting. Virtual ICTP pio@ictp.it

Seminar

13 Nov 2020

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (Atomistic Simulation Webinar Series): Molecular insights on Poly(N-isopropylacrylamide) coil-to-globule transition induced by pressure

Speaker(s): Letizia TAVAGNACCO (CNR-ISC and Physics Department, Rome Sapienza University)

Seminar Start Time: 11:00

Europe/Rome The school will be held from the 14th - 15th November 2020 at the National University of Lesotho, organised by Makhamisa Senekane and Naleli Matjelo. Students can register to attend here: https://tinylink.net/ea4mb The school will introduce quantum computing to undergraduate students in Lesotho utilising open-source quantum computing platforms, and intends to highlight how quantum computing can be used as a driver for the Fourth Industrial Revolution. Students will receive lectures and hands-on tutorials using platforms such as QuTip, Qiskit, Braket, Google Cirq and TensorFlow Quantum. National University of Lesotho ICTP pio@ictp.it

Seminar

14 Nov 2020 - 15 Nov 2020

@ National University of Lesotho

Lesotho 2020: PWF School on Quantum Computing

Seminar Start Time: 07:00

Hosted Activity

16 Nov 2020 - 20 Nov 2020

@ Trieste - Italy

ELETTRA Users workshop | (smr H620)

Address: Strada Costiera, 11 I - 34151 Trieste (Italy)

Room: Kastler Lecture Hall (AGH)

Organizer(s): Elettra-Sincrotrone,

Activity

17 Nov 2020 - 19 Nov 2020

@ Buenos AIres - Argentina

Earth System Physics

Conference on Regional Climate Modeling and Extreme Events over South America: Results from the CORDEX-Flagship Pilot Study * POSTPONED * | (smr 3428)

Secretary: Susanne Henningsen

Organizer(s): Silvina Solman (University of Buenos Aires/CIMA-CONICET, UMI-IFAECI/CNRS-CONICET-UBA), Marcelo Barreiro (University of the Republic), Maria Laura Bettolli (University of Buenos Aires/CONICET), Marta Llopart (UNESP), Rosmeri Porfirio da Rocha (IAG/USP), ICTP Scientific Contact: Erika Coppola

Cosponsor(s): The International Union of Geodesy and Geophysicsiugg4

Europe/Rome We consider an active run-and-tumble particle (RTP) in arbitrary dimension d and compute exactly the probability S(t) that the x-component of the position of the RTP does not change sign up to time t. For the most relevant case of an exponential distribution of times between consecutive tumblings, we show that S(t) is independent of d for any finite time t, as a consequence of the celebrated Sparre Andersen theorem for discrete-time random walks in one dimension. Moreover, we show that this universal result holds for a much wider class of RTP models in which the velocity v of the particle after each tumbling is drawn randomly from an arbitrary probability distribution. Virtual ICTP pio@ictp.it

Seminar

17 Nov 2020

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Statistical Physics): Universal Survival Probability for a d-dimensional run-and-tumble particle

Speaker(s): Satya N. MAJUMDAR (LPTMS, University of Paris-Sud, Orsay, France)

Seminar Start Time: 11:00

Europe/Rome https://zoom.us/j/475819702 Meeting ID: 475-819-702 If you haven't registered for previous QLS webinars, please contact qls@ictp.it to obtain the PASSWORD for this zoom meeting. Abstract: Long-term changes to synaptic plasticity due to transcranial direct current stimulation (tDCS) have been linked to the dynamics of glutamate and GABA via the quantification of the neurotransmitter’s concentration from 1H-NMR spectroscopy (MRS) in vivo in a single scan session. However, our understanding of precisely which physiological processes underlie changes to GABA/Glu concentrations in response to stimulation remains unclear. In other words, what are we measuring with MRS in these situations? One theory is that we are measuring compartmental shifts of neurotransmitters from pre-synaptic vesicles to more visible synaptic, extracellular and cytosolic pools. It is important to understand because there are currently various therapeutic techniques used to target and modulate neurochemical distributions with the aim of promoting functional recovery (from stroke, for example). In this talk, I present the development of a neural model that incorporates neurotransmitter dynamics and calcium-dependent plasticity to allow us to probe the relationship between stimulation, neurotransmitter activity, and plasticity. I simulate tDCS to drive fluctuations in the model, and in so doing I demonstrate how tDCS modifies plasticity as well as the similarities between the model prediction and empirical MRS data. This modelling approach will allow mechanistically informed optimization of current stimulation parameters. Zoom meeting ICTP pio@ictp.it

Seminar

17 Nov 2020

@ Zoom meeting

Quantitative Life Sciences

What are we measuring with magnetic resonance spectroscopy: A neural field model of GABA/Glu synaptic transmission

Speaker(s): Caroline Lea-Carnall (University of Manchester)

Seminar Start Time: 15:00

Europe/Rome The Conference is live-streamed on the ICTP Condensed Matter and Statistical Physics YouTube page at the following link: https://www.youtube.com/channel/UCcW7z2pE37Z4I1koTwahBfA This virtual event is aimed at bringing together African scientists working in the broad area of experimental and theoretical physical sciences to share their latest research activities. This conference is aimed at promoting better awareness of the research going on in the African continent and to facilitate networking especially amongst younger scientists. The conference will include a series of plenary talks in collaboration with the African Light Source (AfLS) meeting that will be occurring in parallel, research talks by invited speakers and a selected number of contributed talks and posters. Topics: Condensed Matter Physics, Material Science, Nanotechonology & Energy Research High Energy Physics, Cosmology, Gravitational Physics Nuclear & Medical Physics Climate & Atmospheric Physics Computational Physics Biological and Medical Physics Atomic, Molecular and Optical Physics Speakers: O. ABAH, Queens University Belfast, Ireland A. ABDALLA, Georg August University Goettingen, Germany J. BABALOLA, University of Ibadan, Nigeria I. DABO, Penn State University, USA F.B. DEJENE, University of the Free State, South Africa M. DIALE, University of Pretoria, South Africa A. ELFIKY, Cairo University, Egypt E. INNACK, Perimeter Institute, Canada S. KENMOE, Duisberg Essen University, Germany S. KHALIL, The Center for Fundamental Physics (CFP) at Zewail City of Science and Technology, Egypt N.A.B. KLUTSE, Ghana Space Science and Technology Institute, Ghana T. KRUGER, University of Pretoria, South Africa C. LECOMTE, Université de Lorraine, France O.D. MAKINDE, Stellenbosch University, South Africa G.B. MBENG, University of Innsbruck, Austria S. NDENGUE, EAIFR, Rwanda M. NKOUA, University Marien Ngouabi, Republic of the Congo A. SEIDU, Aalto University, Finland A.G. SEMIE, Addis Ababa University, Ethiopia D. SHADRACK, NM-AIST, Tanzania H.S. SWAI, NM-AIST, Tanzania Y. TAYALATI, Mohammed V University, Morocco A. TRAORE, Cheikh Anta Diop University, Senegal A. WELTMAN, University of Cape Town, South Africa H.M. WIDATALLAH, Sultan Qaboos University, Oman Parallel Workshop will be held Virtually entitled "The African Synchrotron Light Source Virtual Workshop (AfLS2020)". More info can be found at http://afls3.africanlightsource.org/ Online - ICTP pio@ictp.it

Activity

18 Nov 2020 - 20 Nov 2020

@ Online -

African Physical Society (AfPS) International Conference | (smr 3476)

Room: Online

Secretary: Monica Ancuta, Viktoriya Lvova, Adriana Pinto

Organizer(s): Amna Abdalla (Georg August Universitaet Goettingen, Germany), Akintayo Adedoyin (University of Botswana, Botswana), Omololu Akin-Ojo (EAIFR, Rwanda), Gebremedhn Gebreyesus (University of Ghana, Ghana), Sekazi Mtingwa (TriSEED Consultants, USA), Lawrence Norris (African Light Source Foundation, South Africa), Ahmadou Wague (Cheikh Anta Diop University, Senegal), Local Organiser: Ali Hassanali

Support E-Mail: smr3476@ictp.it

**DEADLINE: 11/11/2020**

Europe/Rome Professor Gukov obtained his PhD in 2001 from Princeton University under the supervision of Edward Witten. He then was a Long-term Prize Fellow of Clay Mathematics Institute at Harvard University and then a member at the School of Mathematics at the Institute of Advanced Study in Princeton. Since 2007 he has been a professor of theoretical physics and mathematics at California Institute of Technology. From 2010 he has been also an external scientific member at Max Planck Institute for Mathematics in Bonn. Professor Gukov has made numerous significant contributions in string theory, quantum field theory and low dimensional topology. Abstract. Quantum physics, topology, and representation theory have a long history of working together. Therefore, it is no surprise that symmetries and their representations play an important role in describing physical phenomena and often label powerful invariants of 3-manifolds and 4-manifolds. More surprising, though, are algebraic structures labeled by topological manifolds or emergence of symmetries in quantum systems where they are not initially expected. Although instances of such 'hidden' algebraic structures are still rare and quite mysterious, they sometimes can be understood or even predicted in the framework of string theory. In this talk, intended for a broad audience, I will survey some of the recent and more intriguing examples of such relations between algebra, topology, and physics. Please register in advance for this webinar: https://zoom.us/webinar/register/WN_qM6GTYG9Sf6npD11F7UXJw After registering, you will receive a confirmation email containing information about joining the webinar. Should you not be able to join the t

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Mathematics

Moduli theory, stability of fibrations and optimal symplectic connections

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Condensed Matter and Statistical Physics

Joint ICTP/SISSA Statistical Physics Seminar: How To Avoid 'Heated' Arguements Among your Spins

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Strings and Higher Dimensional Theories

Dyonic black hole degeneracies in N = 4 string theory from Dabholkar-Harvey Degeneracies

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Quantitative Life Sciences

Interplay between competitive and cooperative interactions in a three-player pathogen system

Hosted Activity

Euro DIG Public Planning Meeting | (smr H607)

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Condensed Matter and Statistical Physics

Joint ICTP/SISSA Statistical Physics Seminar: Geometry of Bounded Critical Phenomena

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Mathematics

Minimal surfaces in H3

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Condensed Matter and Statistical Physics

Joint ICTP/SISSA Statistical Physics Seminar: Emission of Correlated Jets from a Driven Matter-Wave Soliton

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Condensed Matter and Statistical Physics

Joint ICTP/SISSA Statistical Physics Seminar: Cesium Matter-Wave Solitons

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Mathematics

An analogue of Hitchin's equations in the category of polarized varieties

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Condensed Matter and Statistical Physics

CMSP News and Views Seminars: Computational Studies of the Liquid-liquid Transition in Supercooled Water: Old and New Numerical Results

Activity

New Research Areas (High Performance Computing)

Computational School on Electronic Excitations in Novel Materials Using the Yambo Code | (smr 3421)

Activity

Earth System Physics

Public Health and Water Resources - Adaptation to Climate Change in the Eastern Mediterranean | (smr 3422)

Seminar

Salam Distinguished Lectures 2020 by Prof. Marc Mézard. Lecture 1: Artificial Intelligence: success, limits, myths and threats

Seminar

Condensed Matter and Statistical Physics

Joint ICTP/SISSA Statistical Physics Seminar: Quantum Quenches in Sine-Gordon Theory: Progress and Challenges

Seminar

Salam Distinguished Lectures 2020 Prof. Marc Mézard. Lecture 2: The spin glass cornucopia

Seminar

Studying monsoonal flows with Gill’s model with an Ekman layer

Seminar

Salam Distinguished Lectures 2020 by Prof. Marc Mézard. Lecture 3: Statistical physics of inference and machine learning

Seminar

Mathematics

GIT and B-brane monodromy

Seminar

Mathematics

ALGEBRAIC GEOMETRY SEMINAR - Overview of the seminar on scattering diagrams and motivic Hall algebras

Activity

Preparatory School on Optics: Quantum Photonics and Information | (smr 3423)

Seminar

Strings and Higher Dimensional Theories

On the Complexity of Black Holes

Seminar

Strings and Higher Dimensional Theories

New Swampland Conjectures

Seminar

Condensed Matter and Statistical Physics

CMSP News and Views Seminars: First Principles Theory of Flexoelectricity and Related Materials Properties