CMSP

Europe/Rome 2018-12-11 11:00:00 2018-12-11 12:00:00 Joint ICTP/SISSA Statistical Physics Seminar: Graphene and Boundary Conformal Field Theory The infrared fixed point of graphene under the renormalization group flow is a relatively under studied yet important example of a boundary conformal field theory with a number of remarkable properties. It has a close relationship with three dimensional QED. It maps to itself under electric-magnetic duality. Moreover, it along with its supersymmetric cousins all possess an exactly marginal coupling -- the charge of the electron -- which allows for straightforward perturbative calculations in the weak coupling limit. I will review past work on this model and also discuss my own contributions, which focus on understanding the boundary contributions to the anomalous trace of the stress tensor and their role in helping to understand the structure of boundary conformal field theory. SISSA Via Bonomea 265, room 128 ICTP pio@ictp.it 11 Dec 2018

Europe/Rome 2018-12-12 16:00:00 2018-12-12 17:00:00 Condensed Matter and Statistical Physics Seminar: Anyonic Statistics from Time-of-flight Measurements While in three dimensions particles can be classified into bosons and fermions, according to their statistical properties, this classification breaks down in two dimensions and particles with fractional statistics may exist. These exotic objects are called anyons. Among the systems where anyons naturally appear, fractional quantum Hall (FQH) systems are perhaps the most famous. Although the anyonic statistics of the quasihole excitations of these systems has been predicted more than 30 years ago, no clear-cut experimental evidence is available. In this context, I will first review the reasons why particle statistics can be different in three and two spatial dimensions. Then, I will present our proposal for the experimental detection of the quasihole anyonic statistics in an ultracold atomic setup, which, with respect to the previous ones, has the great advantage of only requiring static measurements on the FQH cloud [1]. In conclusions, I will briefly mention the extension of this idea to the case of non-Abelian anyons and to the lattice analogs of the FQH states. [1] R. O. Umucalilar, E. Macaluso, T. Comparin, and I. Carusotto, Phys. Rev. Lett. 120, 230403 (2018). ICTP ICTP pio@ictp.it 12 Dec 2018

Europe/Rome 2018-12-13 14:00:00 2018-12-13 15:00:00 ICTP Seminar Series in Condensed Matter and Statistical Physics: Interplay Between Spin and Dipolar Degrees of Freedom The discovery of novel properties, effects or microscopic mechanisms in modern materials science is often driven by the quest for the coexistence and/or interaction of several functional properties into a single compound. Within this framework, by exploiting the cross-coupling between spin and electric dipoles via spin-orbit coupling in ferroelectric semiconductors, I will focus on the tight link between k-dependent spin-splitting in the electronic structure, spin-texture and electric polarization. Based on density functional simulations, I will show our theoretical predictions of a giant Rashba spin-splitting in several materials (ranging from bulk GeTe to oxides), labeled as Ferro-Electric Rashba Semi-Conductors (FERSC) - where the chirality of the spin texture is one-to-one linked to polarization. ICTP ICTP pio@ictp.it 13 Dec 2018

Europe/Rome 2018-12-18 11:00:00 2018-12-18 12:00:00 Joint ICTP/SISSA Statistical Physics Seminar: title to be announced ICTP ICTP pio@ictp.it 18 Dec 2018

Europe/Rome 2019-01-09 07:00:00 2019-01-11 21:00:00 19th International Workshop on Computational Physics and Material Science: Total Energy and Force Methods | (smr 3266) PLEASE NOTE CHANGE OF VENUE:  ex-SISSA BUILDING AUDITORIUM *** DEADLINE for applications for those not requesting financial support and not needing a visa to enter Italy is 9 DECEMBER 2018 *** The “Total Energy” Workshop has been held traditionally in Trieste every two years since 1987.  This year, the Workshop is about recent progress in electronic structure methods and their applications. The aim is a critical discussion of methods and of possible combinations and challenging applications. It has become one of the most popular regular events of the international ab-initio electronic structure community.  This event also has the ambition to reach out to countries where the electronic structure community is not traditionally as strong as in Europe, the USA and Japan, in coherence with the missions of its traditional host institution, the ICTP. Scientific Advisory Committee: E. Artacho, University of Cambridge, UK W. Andreoni, EPFL, Lausanne, Switzerland
 A. Baldereschi, University of Trieste, Italy R. Car, Princeton University, USA
 C. Filippi, University of Twente, Enschede, The Netherlands M. Finnis, Imperial College, London, UK R. Gebauer, ICTP, Trieste, Italy
 X.-G. Gong, Fudan University, China
 X. Gonze, Université catholique de Louvain, Belgium E. Koch, Forschungszentrum Jülich, Germany
 G. Kresse, University of Vienna, Austria J. Ihm, Seoul National University, Seoul, Korea
 R. M. Martin,  Stanford University, US N. Marzari, EPFL, Lausanne, Switzerland F. Mauri, University “La Sapienza”, Rome, Italy 
 S. Narasimhan, JNCASR, Bangalore, India
 J. B. Neaton, University of California, Berkeley, USA
 W. Pickett,  University of California, Davis, USA
 L. Reining, Ecole Polytechnique Palaiseau, Paris, France Directors: M. Caldas, University of Sao Paulo, Brazil M. Finnis, Imperial College, London, UK J. Neaton, University of California, Berkeley, USA
 Local Organizer: A. Hassanali, ICTP, Trieste, Italy Preliminary List of Invited Speakers: O. Akin-Ojo, ICTP EAIFR, Rwanda S. Biermann, Ecole Polytechnique, CNRS M. Ceriotti, EPFL C. Cocchi, Humboldt University, Berlin G. Csanyi, University of Cambridge R. Eder, Karlsruhe Institute of Technology J. Kunes, TU Wien N. Marzari, EPFL C. Miranda, University of Sao Paulo B. Monserrat, University of Cambridge S. Narasimhan, JNCSAR, Bangalore F. Neese, MPI-Mülheim E. Pavarini, Forschungszentrum Juelich C. Pignedoli, EMPA-Dübendorf S. Y. Quek, National University of Singapore A. Soluyanov, ETH Zurich M. Todorova, MPI-GmbH C. Van de Walle, University of California, Santa Barbara D. Vanderbilt, Rutgers University C. Weber, King’s College London J. Wilhelm, BASF H. Xiang, Fudan University ICTP ICTP pio@ictp.it 9 Jan 2019 - 11 Jan 2019

Europe/Rome 2019-01-14 07:00:00 2019-01-18 21:00:00 Workshop on Crystal Structure Prediction: Exploring the Mendeleev Table as a Palette to Design New Materials | (smr 3267) TO ALL SELECTED PARTICIPANTS: For your consideration in making travel arrangements, and securing your participation in the whole activity (i.e. 3 days  of advanced workshop and 2 days of hands-on tutorials) please note that the: Workshop will start: in the morning of Monday, 14 January Workshop will end: late afternoon of Friday 18 January Agenda of the activity will be published in the near future -  under finalization. * * *      Several million chemical compounds are known, but with 118 chemical elements the number of compounds that are stable and could be synthesized is potentially much larger.    The Workshop focuses on recent developments in the prediction of crystal structures by computational methods.   Thanks to enormous progresses in computational power and in algorithm development, we are now closer to the possibility to predict the structure of a material from the simple knowledge of its composition. This Workshop will be dedicated to presenting and discussing the algorithms for in-silico crystal structure prediction that were developed in the last years, focusing in particular on the approaches based on molecular modeling.      We find particularly appropriate holding this conference in 2019, the International Year of the Periodic Table, since crystal structure prediction is rooted in a deep knowledge of the properties of the atoms.      The Workshop will be divided into two parts: the first 3 days will be dedicated to an advanced discussion of the latest advances in the field and last 2 days will be dedicated to hands-on tutorials with structure prediction methods in combination with electronic structure and atomistic methods.      A Poster Session will also be organized, and interested candidates are invited to upload a short abstract of their proposed posters during the application process (max. half page, in pdf format). Poster presentation is not mandatory, however participants are encouraged to present their results.   Topics: Genetic algorithms Random search algorithms Metadynamics Machine learning methods Nucleation Atomistic methods and force fields Electronic structure methods   There is no registration fee. Secretariat: smr3267@ictp.it * * *   Potential participants might be interested in applying also in the:   19th International Workshop on Computational Physics and Material Science: Total Energy and Force Methods to be held a the ICTP from 9 to 11 January 2018 (smr 3266) Relevant webpage and online application (deadline: expired): http://indico.ictp.it/event/8658/   ICTP ICTP pio@ictp.it 14 Jan 2019 - 18 Jan 2019

Europe/Rome 2019-02-18 07:00:00 2019-02-22 21:00:00 Advanced School on Ubiquitous Quantum Physics: the New Quantum Revolution | (smr 3273) The fast growing use of quantum theory in technology-oriented and information-related fields is attracting the interest of an increasing number of researchers, especially young ones. The reborn interest in quantum physics has created a unique framework in which theoretical and experimental physics can fruitfully dialogue with information theory and computer science. The School intends to convey such an interdisciplinary spirit to graduate students and young researchers and will focus upon three themes, i) Quantum dynamics in the macro-world: quantum coherence and entanglement ii) Quantum theory as an interdisciplinary paradigm: quantum information and simulation iii) Quantum physics as a technology boost: quantum devices and machines emphasizing their inter-relations and covering the relevant background material, that will be taught by nine renowned experts in the above fields. The School is followed by a more specialized Workshop in which students attending the School are invited to participate. The Workshop Web page is http://indico.ictp.it/event/8662/ ICTP ICTP pio@ictp.it 18 Feb 2019 - 22 Feb 2019

Europe/Rome 2019-02-25 07:00:00 2019-03-01 21:00:00 Workshop on Ubiquitous Quantum Physics: the New Quantum Revolution | (smr 3371) The fast growing use of quantum theory in technology-oriented and information-related fields is heralding a new technological revolution based on the fruitful dialogue among theoretical and experimental physics, information theory and computer science. The Workshop follows a School of the same title focussing from a more specialized perspective upon the same three topics: i) Quantum dynamics in the macro-world: quantum coherence and entanglement ii) Quantum theory as an interdisciplinary paradigm: quantum information and simulation iii) Quantum physics as a technology boost: quantum devices and machines. Aim of the Workshop is to bring together experts that will present their latest developments thus providing all participants, among them students who attended the School, with a unique venue for sharing and discussing novel trends and ideas, integrating the fundamentals with the ongoing state of the various disciplines. The School Web page is http://indico.ictp.it/event/8648/ ICTP ICTP pio@ictp.it 25 Feb 2019 - 1 Mar 2019