ICTP - Virtual Seminars

Virtual Seminars

ICTP is expanding its free, online, interactive streaming options for its seminars and colloquia to mitigate some of the effects of isolation during the COVID-19 emergency and beyond. Check this page frequently for upcoming events that will be shared via the interactive webinar platform Zoom.

Showing 5 records

Europe/Rome Augustin Lafay (ENS, Paris) Two dimensional gases of non intersecting loops have been a subject of study in mathematical physics for more than thirty years because of their numerous connections to integrability, two dimensional conformal field theory, random geometry and combinatorics. In this talk, I will present a natural generalization of loop models to gases of graphs possessing branchings. These graphs are called webs and first appeared in the mathematical community as diagrammatic presentations of categories of representations of quantum groups. The web models posses properties similar to the loop models. For instance, it will be shown that they describe, for some tuning of the parameters, interfaces of spin clusters in Zn spin models. Focusing on the numerically more accessible case of Uq(sl3) webs (or Kuperberg webs), it is possible to identify critical phases that are analogous to the dense and dilute phases of the loop models. These phases are then described by a Coulomb Gas with a two component bosonic field. Hybrid seminar: Virtual and SISSA room 134 ICTP pio@ictp.it

Seminar

7 Dec 2021

@ Hybrid seminar: Virtual and SISSA room 134

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Statistical Physics): Web models as generalizations of statistical loop models

Address: Via Bonomea, 265 Trieste

Room: SISSA 134

Speaker(s): Augustin Lafay (ENS, Paris)

Seminar Start Time: 11:00

Europe/Rome Join Zoom Meeting https://zoom.us/j/96551628989 Meeting ID: 965 5162 8989 Passcode: 134873 Hybrid presence c/o Euler Lecture Hall + zoom meeting. Kindly note that the maximum number of participants in presence is 30 pp. ZOOM Meeting ICTP pio@ictp.it

Seminar

9 Dec 2021

@ ZOOM Meeting

Phenomenology of Particle Physics

HECAP Seminar: QCD Axion Kinetic Misalignment: Observational Aspects

Room: Leonardo Building - Euler Lecture Hall

Speaker(s): Nicolas H. Bernal (Universidad Antonio Narino, Bogota, Colombia)

Seminar Start Time: 16:00

Europe/Rome by Dr. Hami Said Ahmed Soil and Water Management & Crop Nutrition Laboratory Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture (Vienna, Austria) Global climate change has a major impact on the availability of water resources for agricultural production. Sustainable agricultural productivity to ensure food security requires good agricultural water management. To improve the use of this resource in agriculture, it is imperative to monitor the soil moisture, which is not only a key variable in irrigation management, but also for hydrological modelling, ground water recharge, flood, and drought forecasting. Cosmic Ray Neutron Sensors (CRNS) is a nuclear technology which have the capability to estimate field-scale soil moisture (SM) in large areas up to 20 to 30 ha and appear to become a credible and robust alternative to traditional soil moisture monitoring devices. CRNS technique is based on the detection of natural neutron coming from cosmos. The fast, high-energy incoming neutrons eventually penetrate the soil and then scatter back into the atmosphere. These scattered neutrons lose energy (‘thermalized’) due to collisions mainly with hydrogen atoms which come mostly from soil moisture. The CRNS measures these low-energy neutrons near the soil surface. Because the neutrons are spatially distributed and scatter across large distances in the air, they can monitor soil moisture over vast areas. CRNS technology is a promising tool for area-wide soil moisture monitoring and agricultural water management. Register in advance for this webinar: https://zoom.us/webinar/register/WN_3GpY5zMHScaLJDC-RfQ9pA After registering, you will receive a confirmation email containing information about joining the webinar. Virtual Zoom ICTP pio@ictp.it

Seminar

13 Dec 2021

@ Virtual Zoom

Science, Technology and Innovation

Cosmic Ray Neutron Sensor (CRNS) technology for area-wide soil moisture monitoring

Organizer(s): Marco Zennaro

Speaker(s): Hami Said Ahmed

Support E-Mail: sti@ictp.it

Seminar Start Time: 15:00

Europe/Rome Density-functional theory (DFT) with extended Hubbard functionals is a powerful method for studying complex materials containing transition-metal and rare-earth elements, owing to its accuracy in correcting self-interactions and its low computational costs [1]. There are two key elements in these formulations which are closely interconnected: i) the choice of the on-site U and inter-site V Hubbard parameters, and ii) the choice of the Hubbard manifold. Recently, we developed an automated and reliable approach for the first-principles determination of U and V using density-functional perturbation theory (DFPT) [2,3]. In this talk I will show that DFPT allows us to reduce significantly computational costs, improve numerical accuracy, and fully automate the calculation of the Hubbard parameters by recasting the linear response of a localized perturbation in supercells into an array of monochromatic perturbations that can be calculated in the primitive cell. This framework can be used with different Hubbard manifolds, such as nonorthogonalized and orthogonalized atomic orbitals, including the respective calculation of Pulay (Hubbard) forces and stresses [4] that are needed for the self-consistent evaluation of Hubbard parameters [3]. I will show how this formalism can be used for the evaluation of such properties as voltages in Li-ion batteries, formation energies of oxygen vacancies in perovskites, and I will discuss the applicability of this formalism for improving band gaps with respect to standard DFT [5] and its use for searching of novel materials for the photocatalytic water splitting [6]. Finally, I will present the extension of this framework to the calculations of phonons [7] and electron-phonon coupling [8] in selected transition-metal compounds. These tools are implemented in the open-source Quantum ESPRESSO distribution [9] and are available to the community at large. [1] V.L. Campo Jr and M. Cococcioni, J. Phys.: Condens. Matter. 22, 055602 (2010). [2] I. Timrov, N. Marzari, M. Cococcioni, Phys. Rev. B 98, 085127 (2018). [3] I. Timrov, N. Marzari, M. Cococcioni, Phys. Rev. B 103, 045141 (2021). [4] I. Timrov, F. Aquilante, L. Binci, M. Cococcioni, N. Marzari, Phys. Rev. B 102, 235159 (2020). [5] N.E. Kirchner-Hall, W. Zhao, Y. Xiong, I. Timrov, I. Dabo, Appl, Sci. 11, 2395 (2021). [6] Y. Xiong et al., Energy Environ. Sci. 14, 2335 (2021). [7] A. Floris, I. Timrov, B. Himmetoglu, N. Marzari, S. de Gironcoli, M. Cococcioni, Phys. Rev. B 101, 064305 (2020). [8] J.-J. Zhou, J. Park, I. Timrov, A. Floris, M. Cococcioni, N. Marzari, M. Bernardi, Phys. Rev. Lett. 127, 126404 (2021). [9] P. Giannozzi et al., J. Phys.: Condens. Matter 29, 465901 (2017). Registration details will be announced closer to the seminar date. Virtual ICTP pio@ictp.it

Seminar

15 Dec 2021

@ Virtual

Condensed Matter and Statistical Physics

CMSP Seminar (Atomistic Simulation Webinar Series): Density-functional theory with extended Hubbard functionals: recent developments and applications

Speaker(s): Iurii Timrov (THEOS and MARVEL, EPFL, Lausanne, Switzerland)

Seminar Start Time: 11:00

Europe/Rome You are cordially invited to participate in the hybrid (part online part in presence) Graduation Ceremony of the students of the 7th cycle of the Master of Advanced Studies in Medical Physics, a two-year advanced training programme in the field of medical physics, jointly organised by ICTP and the Trieste University and co-sponsored by the International Atomic Energy Agency (IAEA). The first year is spent at ICTP while the second year is dedicated to clinical professional training in a Medical Physics Department of an Italian hospital of the training network, supported by the Italian Association of Medical Physics (AIFM). The International organisation for medical physics (IOMP) has given an international accreditation to the programme. The programme is supporting LMI countries in the development of medical physics, an applied physics sector contributing to the development, introduction and use of advanced technologies in the medical sector. The tentative programme outline for this hybrid event is as follows: Moderator: Luciano Bertocchi (ICTP) Welcome remarks: Atish Dabholkar (ICTP Director) Hua Liu (DDG-TC, IAEA) H.E. Ambassador, Permanent Mission of Jamaica, IAEA (to be confirmed) Valter Sergo (Deputy Rector, Trieste University) Deborah van der Merwe (Human Health Dept, IAEA) Slavik Tabakov (IOMP Past President, IUPESM Vice-President) Paddy Gilligan (EFOMP President) Annalisa Trianni (AIFM) Invited lecture: "PET/CT/MRI applications: opportunities and challenges" by Professor Vesna Sossi (University of British Columbia, USA) (* abstract below). Testimonial: Jumaa bin Dachi (Tanzania), former MMP student Brief remarks: Ahmed Meghzifene (MMP External Advisor) Renata Longo (Trieste University) Renato Padovani (ICTP) Anthony Scott (Jamaica), Best MMP student 2021 Lucy Arana Pena (Guatemala), Former MMP student Degrees distribution (Renata Longo and George Thompson (tbc)) Register in advance for this webinar: https://zoom.us/webinar/register/WN_f4ahAaw9Q76DI0kIKEVNvg After registering, you will receive a confirmation email containing information about joining the webinar. -------------------------------------------------------- The event is also in live streaming at: ictp.it/livestream. Light refreshments will be provided after the ceremony. * Abstract for invited lecture: The more we learn about human disease the more we appreciate its multifaceted complexity and variability. This knowledge requires increasingly more sophisticated non- invasive investigative tools and data analysis algorithms to better understand and characterize disease, identify new therapeutic targets, evaluate treatment efficacy and optimally stratify subjects for clinical trials and treatment strategies. Multi-modality imaging including PET, CT and MRI, which offer complementary information, is optimally suited to address many aspects of physiological complexity of the human body. This talk will describe the interplay between scientific discoveries and developments in instrumentation and data analysis and how their synergies are opening news fields of investigation and facilitate clinical applications. Specific examples will be will be drawn from oncology and neurodegeneration. ICTP and online ICTP pio@ictp.it

Ceremony

15 Dec 2021

@ ICTP and online

GRADUATION CEREMONY: Master of Advanced Studies in Medical Physics (2020/2021)

Address: Strada Costiera 11 34141 Trieste Italy

Room: Leonardo Building - Budinich Lecture Hall

The MMP Graduation Ceremony includes an invited talk by Prof. Vesna Sossi from the University of British Colombia, USA, on "PET/CT/MRI applications: opportunities and challenges"

ICTP - Strada Costiera, 11
I - 34151 Trieste Italy
(+39) 040 2240 111
pio@ictp.it

ICTP is governed by UNESCO, IAEA, and Italy, and is a UNESCO Category 1 Institute

HECAP

CMSP

MATH

ESP

STI

QLS

New Research Areas

Virtual Seminars

Seminar

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Statistical Physics): Web models as generalizations of statistical loop models

Seminar

Phenomenology of Particle Physics

HECAP Seminar: QCD Axion Kinetic Misalignment: Observational Aspects

Seminar

Science, Technology and Innovation

Cosmic Ray Neutron Sensor (CRNS) technology for area-wide soil moisture monitoring

Seminar

Condensed Matter and Statistical Physics

CMSP Seminar (Atomistic Simulation Webinar Series): Density-functional theory with extended Hubbard functionals: recent developments and applications

Ceremony

GRADUATION CEREMONY: Master of Advanced Studies in Medical Physics (2020/2021)

CheckRedirectPage

HECAP

CMSP

MATH

ESP

STI

QLS

New Research Areas

Contextual Navigation

Virtual Seminars

Seminar

Condensed Matter and Statistical Physics

CMSP Seminar (Joint ICTP/SISSA Statistical Physics): Web models as generalizations of statistical loop models

Seminar

Phenomenology of Particle Physics

HECAP Seminar: QCD Axion Kinetic Misalignment: Observational Aspects

Seminar

Science, Technology and Innovation

Cosmic Ray Neutron Sensor (CRNS) technology for area-wide soil moisture monitoring

Seminar

Condensed Matter and Statistical Physics

CMSP Seminar (Atomistic Simulation Webinar Series): Density-functional theory with extended Hubbard functionals: recent developments and applications

Ceremony

GRADUATION CEREMONY: Master of Advanced Studies in Medical Physics (2020/2021)

CheckRedirectPage