CMSP

Europe/Rome 2018-10-16 11:00:00 2018-10-16 12:00:00 Joint ICTP/SISSA Statistical Physics Seminar: Walking, Weakly First Order Phase Transitions and Complex CFTs I will discuss walking behavior in gauge theories and weakly first order phase transition in statistical models. Despite being phenomena appearing in very different physical systems, they both show a region of approximate scale invariance. They can be understood as a theory passing between two fixed points living at complex couplings, which we call complex CFTs. By using conformal perturbation theory, knowing the conformal data of the complex CFTs allows us to make predictions on the observables of the walking theory. As an example, I will discuss the two dimensional Q-state Potts model with Q>4. SISSA, Via Bonomea 265, room 004 ICTP pio@ictp.it 16 Oct 2018

Europe/Rome 2018-10-18 10:30:00 2018-10-18 12:00:00 Condensed Matter & Statistical Physics SPECIAL SERIES OF TUTORIALS: Evolving Quantum States with Matrix Product Ansatz PART I In this tutorial I will describe matrix product state (MPS) ansatz and it's generalization to operators, and show how it can be used to calculate unitary or dissipative quantum evolution. Such ansatz is namely in some situations rather efficient and allows to study large many-body systems. I will explain how to write states in the canonical MPS form and how to perform transformations, preserving optimal finite-rank description. The tutorial will include blackboard exercises as well as hands-on numerical examples and will give sufficient knowledge to produce your own code.          ICTP ICTP pio@ictp.it 18 Oct 2018

Europe/Rome 2018-10-19 10:30:00 2018-10-19 12:00:00 Condensed Matter & Statistical Physics SPECIAL SERIES OF TUTORIALS: Evolving Quantum States with Matrix Product Ansatz PART II In this tutorial I will describe matrix product state (MPS) ansatz and it's generalization to operators, and show how it can be used to calculate unitary or dissipative quantum evolution. Such ansatz is namely in some situations rather efficient and allows to study large many-body systems. I will explain how to write states in the canonical MPS form and how to perform transformations, preserving optimal finite-rank description. The tutorial will include blackboard exercises as well as hands-on numerical examples and will give sufficient knowledge to produce your own code.    ICTP ICTP pio@ictp.it 19 Oct 2018

Europe/Rome 2018-11-06 11:00:00 2018-11-06 12:00:00 Joint ICTP/SISSA Statistical Physics Seminar 'The Frustration in Being Odd: Area Law Violation in Local Systems' We demonstrate the existence of a new quantum phase of matter that arises in antiferromagnetic spin chains with a weak frustration -just one bond in a large chain-. This is the case, for instance, of systems with an odd number of spins with periodic boundary conditions. Such new phase is extended, gapless, but not relativistic: the low-energy excitations have a quadratic (Galilean) spectrum. Locally, the correlation functions on the ground state do not show significant deviations compared to the non-frustrated case, but correlators involving a number of sites (or distances) scaling like the system size display new behaviors. In particular, the von Neumann entanglement entropy is found to follow new rules, for which neither area law applies, nor one has a divergence of the entropy with the system size. Such very long-range correlations are novel and of potential technological interest. We display such new phase in a few prototypical chains using numerical simulations and we study analytically the paradigmatic example of the Ising chain. Through these examples we argue that this phase emerges generally in (weakly) frustrated systems with discrete symmetries. Reference: Salvatore Marco Giampaolo, Flávia Braga Ramos, Fabio Franchini: arXiv:1807.07055 SISSA, Via Bonomea 265, Room 004 ICTP pio@ictp.it 6 Nov 2018

Europe/Rome 2018-10-15 08:00:00 2018-10-19 22:00:00 Ethiopian Regional Workshop on Solar Energy and Energy Storage Technologies: Materials, System Design, and Applications | (smr 3149) Director: Teketel YOHANNES, AASTU, Addis Ababa, Ethiopia ICTP Contacts: Ralph GEBAUER & Nicola SERIANI, ICTP, Trieste, Italy The Workshop addresses students and researchers working in the field of solar energy and energy storage.  The event will focus on fundamental and applied research on functional materials, on devices and on their application. To cope with increasing global energy demand, solar energy is one of the best alternatives.  The feasibility of solar energy technology in Africa, where the sun is available throughout the year, is not questionable.  This huge energy can be used as photo-thermal and in photovoltaic forms.  For efficient conversion of solar energy it is very important to have a clear understanding of the photo-physical and opto-electrical properties of materials.  In parallel with the development of photovoltaic devices, due attention has to be given to the storage of electrical energy in easily portable chemical energy forms and/or in an electrical field.  Since solar energy is collected only in the day time, it is also wise to develop alternative technologies such as storage for renewable energy forms. Please note that funds from the Joint Undertaking for an African Materials Institute (JUAMI) are also available for US students. TOPICS: Current photovoltaic systems, new technologies; Promise of nanostructures and technology in this field; Wind and geothermal energy: potential and installations in Ethiopia; Energy storage: fuel cells, batteries and supercapacitors; Importance of materials science, experimental and computational approach; Renewable energy potentials in the region. WORKSHOP SPEAKERS: Michael ARMAND, Minano, Spain Vladimir DYAKONOV, Wuerzburg, Germany Gebrekldan G. ESHETU, Aachen, Germany Sosina M. HAILE, Northwestern, U.S.A. Harold HOPPE, Jena, Germany Kenneth I. OZOEMENA, Johannesburg, South Africa Markus C. SCHARBER, Linz, Austria Veronika WITTMANN, Linz, Austria Addis Ababa - Ethiopia ICTP pio@ictp.it 15 Oct 2018 - 19 Oct 2018

Europe/Rome 2018-10-22 08:00:00 2018-11-02 21:00:00 5th African School on Electronic Structure Methods and Applications (ASESMA-2018) | (smr 3234) Directors: N. CHETTY, University of Pretoria, South Africa R. MARTIN, Stanford University, U.S.A. S. NARASIMHAN, JNCASR Bangalore, India S. SCANDOLO, ICTP, Trieste, Italy N. SERIANI, ICTP, Trieste, Italy Local Organizer: T. YOHANNES, AASTU, Addis Ababa, Ethiopia ICTP contacts: S. SCANDOLO, ICTP, Trieste, Italy N. SERIANI, ICTP, Trieste, Italy The Schools provide an introdution to the theory of electronic structure and other atomistic simulation methods, with an emphasis on the computational methods for practical calculations.   The African School series on Electronic Structure Methods and Applications is planned on a biennial basis from 2010 to 2020.  Previous schools were held in Cape Town, South Africa (2010), Eldoret, Kenya (2012), Johannesburg, South Africa (2015) and Accra, Ghana (2016). The School will also cover basic and advanced topics and applications of these methods to the structural, mechanical and optical properties of materials. The School will include hands-on tutorial sessions based on public license codes (including, but not limited to, the Quantum Espresso package).   During the second week, students will be asked to split up in teams and work on specific projects under the guidance of the lecturers and mentors. Please note that funds from the Joint Undertaking for an African Materials Institute (JUAMI) are also available for US students. Invited Speakers: O. AKIN-OJO, ICTP-EAIFR, Rwanda G. AMOLO, TU Kenya, Nairobi M. CASIDA, Universite' Grenoble Alpes, Saint-Martin-d'Heres, France M. GATTI, ETSF, LSI - CNRS, Palaiseau, France G. GEBREYESUS, University of Ghana E. LUIJTEN, Northwestern McCormick Sch. of Eng., Evanston, U.S.A. D. MAGERO, University of Eldoret, Kenya A. MARINI, ISM, Rome, Italy R. MAEZONO, JAIS, Ishikawa, Japan S. NARASIMHAN, JNCASR Bangalore, India Y. SHAIDU, SISSA, Trieste, Italy Addis Ababa - ICTP pio@ictp.it 22 Oct 2018 - 2 Nov 2018

Europe/Rome 2018-11-05 07:00:00 2018-11-15 21:00:00 Conference on Latin American Initiative for Molecular Simulations | (smr 3245) Montevideo - Uruguay ICTP pio@ictp.it 5 Nov 2018 - 15 Nov 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) Deadline for applications: (was 15 OCTOBER 2018) now extended to 21 OCTOBER 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, U.K. J. Neaton, University of California, Berkeley, USA
 Local Organizer: A. Hassanali, ICTP, Trieste, Italy Preliminary List of Invited Speakers: S. Biermann, Ecole Polytechnique, CNRS A. Botana, Arizona State University K. Burke, University of California, Irvine 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 I. Mertig, MLU-Halle 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