CMSP

Europe/Rome 2017-06-27 11:00:00 2017-06-27 12:00:00 SPECIAL Condensed Matter Seminar: Variations on a Theme of Aharonov and Bohm KINDLY NOTE VENUE:  ICTP Budinich Lecture Room, entrance Leonardo Building. Abstract: The Aharonov-Bohm effect (AB) concerns the role in quantum physics of the magnetic vector potential of an impenetrable line of magnetic flux. Its partial anticipation by Ehrenberg and Siday, in terms of interference, was an approximation whose wavefunction was not singlevalued. Its connection with the singlevalued AB wave involves topology: ‘whirling waves’ winding round the flux. AB is a fine illustration of idealization in physics. There are four AB effects, depending on whether the waves and the flux are classical or quantum. In the classical-classical case, many details of the AB wavefunction have been explored experimentally in ripples scattered by a water vortex, where the flow velocity of the water corresponds to the vector potential; this analogy has recently been extended to include superradiance. The AB wave possesses a phase singularity, and there is a similar phenomenon in general interferometers. Connections between the AB wave and the Cornu spiral describing edge diffraction lead to very accurate approximations. ICTP ICTP pio@ictp.it 27 Jun 2017

Europe/Rome 2017-07-03 11:00:00 2017-07-03 12:00:00 Condensed Matter Seminar: Structure and Mechanical Properties of Pristine and Oxidized Graphene Films: Computations and Experiments Graphene and chemically functionalized graphene are two-dimensional materials exhibiting fascinating properties. Technological applications of these materials can emerge only from understanding and controlling structure and properties at the layer/atomic level. In this talk, I will report on our recent atomistic studies of the chemical structure and mechanical properties of both pristine and oxidized multilayer graphene films on SiC. I will first focus on graphene oxide and present results of a density functional theory study undertaken to interpret puzzling X-ray photoelectron spectroscopy and X-ray diffraction measurements. Secondly, I will report on atomic force microscope (AFM) indentation measurements of the perpendicular-to-the-plane elasticity of graphene-based films, and after presenting selected experimental results, I will focus on the computations carried out to elucidate the elastic behaviors of both the pristine and oxidized graphene films. Key topics discussed in this talk include (i) the chemical structure and mechanisms underlying the metastable character of epitaxial graphene oxide [1,2], (ii) the role played by moisture to influence the elastic modulus and structure of the graphene oxide films [3,4], and (iii) the unusual mechanical response exhibited by a bilayer graphene film on SiC when indented by an AFM tip [4]. [1] S. Kim, S. Zhou, Y. Hu, M. Acik, Y.J. Chabal, C. Berger, W. de Heer, A. Bongiorno, and E. Riedo, Room-temperature metastability of multilayer graphene oxide films, Nature Materials 11, 544 (2012). [2] S. Zhou and A. Bongiorno, Density Functional Theory Modeling of Multilayer “Epitaxial” Graphene Oxide, Accounts of Chemical Research 47, 3331 (2014). [3] S. Zhou, S. Kim, E. Di Gennaro, Y. Hu, C. Gong, C.-Y. Chang, X. Lu, H.-C. Chiu, C. Berger, W. de Heer, E. Riedo, Y.J. Chabal, C. Aruta, and A. Bongiorno, Film structure of epitaxial graphene oxide on SiC: Insight on the relationship between interlayer spacing, water content, and intralayer structure, Advanced Materials Interfaces 1, 1300106 (2014). [4] Y. Gao, S. Kim, S. Zhou, H.-C. Chiu, D. Nélias, C. Berger, W. de Heer, R. Sordan, L. Polloni, A. Bongiorno, and E. Riedo, Elastic coupling between layers in two-dimensional materials, NaturMaterials 14, 714 (2015). ICTP ICTP pio@ictp.it 3 Jul 2017

Europe/Rome 2017-07-03 14:00:00 2017-07-03 15:15:00 CMSP Special Series of Lectures on Quantum Many-body Systems Using Tensor Networks: An Introduction. (1) Entanglement and Tensor-Network Ansatz ICTP ICTP pio@ictp.it 3 Jul 2017

Europe/Rome 2017-07-03 15:15:00 2017-07-03 16:30:00 CMSP Special Series of Lectures on Quantum Many-body Systems Using Tensor Networks: An Introduction. (2) Variational Approaches in Low-dimensional Tensor Networks ICTP ICTP pio@ictp.it 3 Jul 2017

Europe/Rome 2017-06-26 08:00:00 2017-06-30 22:00:00 Joint ICTP-COST-MODPHYSFRICT Conference on “Trends in Nanotribology 2017” (TiN17) | (smr 3127)   ICTP ICTP pio@ictp.it 26 Jun 2017 - 30 Jun 2017

Europe/Rome 2017-07-03 08:00:00 2017-07-07 22:00:00 Workshop on Understanding Quantum Phenomena with Path Integrals: From Chemical Systems to Quantum fluids and Solids | (smr 3131) Registration and Administrative formalities will start on Monday, 3 July at 8.30 - 10.00 The Programme will start at 10.00 with Welcome addresses and will finish on Friday, 7 July at approximately 12.30 ============================================================ The aim of this interdisciplinary Workshop is to gather together physicists and chemists who employ path-integral simulations on different systems, ranging from chemical and biochemical compounds, to quantum fluids/solids, to ultracold gases. The goal is to create the platform for exchanging knowledge on path-integral technology and on other approaches to the combined quantum simulation of electrons and nuclei.   This Workshop will present the most recent methodological developments and applications to the intriguing quantum phenomena, including, e.g., isotope effects in aqueous systems, quantum fluctuations in enzyme catalysis, superfluid/supersolid transitions, and correlation effects in electronic systems.   The programme will include 25 to 30 oral presentations given by invited speakers, a poster session and a flash talk session with short oral contributions.   CALL FOR CONTRIBUTED ABSTRACTS: In the application form, all applicants are invited to submit an Abstract (preferably using the template indicated below) for a poster presentation and for a flash talk (approximately 3 or 4 minutes long) to advertise the content of the poster.   GRANTS A limited number of grants are available to support the travel and living expenses of selected participants, with strong priority given to participants working in a developing country and who are at the early stages of their career.  We also acknowledge financial support from the Psi-k Network. There is no registration fee. Speakers: Nandini ANANTH (Cornell University) Gianluca BERTAINA (University of Milan) Massimo BONINSEGNI (University of Alberta) Jordi BORONAT (UPC, Barcelona) Fabio CINTI (NITheP, Stellenbosch) Bryan CLARK (UIUC) Jonathan DUBOIS (LLNL) Davide GALLI (University of Milan) Markus HOLZMANN (LPMMC, Grenoble) Yongkyung KWON (Konkuk U., Seoul) Ilkka KYLANPAA (TUT, Tampere) Nancy MAKRI (UIUC) Ondrej MARSALEK (Stanford University) Glenn MARTYNA (IBM T.J. Watson RC) Dominik MARX (Ruhr-Universitaet Bochum) Guglielmo MAZZOLA (ETH Zurich) Burkhard MILITZER (UC Berkeley) Marco NAVA (ETH Zurich) Carlo PIERLEONI (University o L'Aquila) Igor POLTAVSKYI (Universite' du Luxembourg) Nikolay PROKOF'EV (UMass, Amerst) George REITER (University of Houston) Jeremy RICHARDSON (ETH Zurich) Mariana ROSSI CARVALHO (FHI Berlin) Sandro SORELLA (SISSA) Mark TUCKERMAN (New York University) ICTP ICTP pio@ictp.it 3 Jul 2017 - 7 Jul 2017

Europe/Rome 2017-07-10 08:00:00 2017-07-14 22:00:00 Conference on Many-Body-Localization: Advances in the Theory and Experimental Progress | (smr 3132) Deadline to apply:  28 March 2017 Recent developments in 'Many Body Localization' will be presented by leading theorists and experimentalists working in this rapidly developing field. Comprehensive review lectures, topical contributed talks and poster sessons are planned. All courses will be taught in English. The phenomenon of Many Body Localization (MBL) is fundamental to understanding thermodynamics and kinetics of interacting quantum systems with vast potential applications to quantum computation and quantum engineering.  From the theory viewpoint, it resulted from a non-trivial development of ideas of Anderson localization, entanglement and phase transitions in interacting quantum systems. Experimentally, its observation would require the system under study to be very well isolated and to allow an unprecedented level of control. The natural experimental playground for MBL is represented by systems of ultra-cold atoms and Josephson junctions. The progress in this field so far came essentially from theoretical consideration, and now, we must promote MBL to the world of experimental physics. Applicants who are interested in presenting a poster, should kindly submit a very short abstract (max one page, PDF format), by uploading the file in the "Upload Abstract" field on the online application form. Topics: • Anderson localization • Entanglement • Phase transitions in interacting quantum systems • Thermodynamcs and kinetics in interacting quantum systems Grants: A very limited number of grants are available to support the travel and living expenses of a few selected participants, with strong priority given to participants working in a developing country. Speakers: D. Abanin (Geneva) I. Aleiner (New York) F. Alet (Toulouse) J. Bardarson (MPI, Dresden) D. Basko (Grenoble) I. Bloch (Munich) E. Bogomolny (Paris) A. Chandran (Boston) D. Huse (Princeton) - * to confirm S. Flach (Daejeon) L. Ioffe (Paris) V. Khemani (Princeton) N. Laflorencie (Toulouse) C. Laumann (Boston) G. Lemarie (Toulouse) I. Lerner (Birmingham) M. Lukin (Harvard) V. Mastropietro (Milan) M. Müller (PSI Villigen) A. Pal (Oxford) V. Ros (Paris) L. Sanchez-Palencia (Palaiseau) M. Serbin (Berkeley) D. Shahar (Rehovot) G. Shlyapnikov (Paris) V. Smelyanskiy (Los Angeles) S. Warzel (Munich) M. Znidaric (Ljubljana) ICTP ICTP pio@ictp.it 10 Jul 2017 - 14 Jul 2017

Europe/Rome 2017-07-31 08:00:00 2017-08-04 22:00:00 School on Fundamentals on Quantum Transport | (smr 3136) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - We are also organizing a related and more advanced Workshop on Fundamentals on Quantum Transport (the week after, i.e. from 7 to 11 August 2017) , you may wish to apply through the relevant webpage: smr 3176 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Since more than thirty years the study of quantum effects on transport properties has been a precious tool to unveil fundamental properties of quantum matter. At the same time it has been the key to the design of new nano-devices with specific functionalities. Together with old problems, still awaiting for a complete understanding, the discovery of new materials has posed new challenges. Important advances on the experimental side have stimulated a flurry of theoretical activity of unprecedented intensity. In the condensed matter realm this is the case, for example, of heat transport and control that only recently has received an important experimental boost. Furthermore, quantum transport has moved outside its traditional arena and it is now investigated with great success in other experimental platforms as photonic and cold atomic systems. All these different physical systems have many properties in common but at the same time important differences. Topics that will be covered include: The Superconductor-Insulator Transition, Transport In Graphene, The Metal-Insulator Transition In Quantum Systems, Transport And Entanglement, Topological Insulators And Superconductors, Mesoscopic Effects, Thermoelectric Effects, Heat Transport, Quantum Pumping, Photon And Polariton Transport, Quantum Transport In Cold Atoms, Quantum Hall Systems. Preliminary list of lecturers: A. ASPECT, Institut d'Optique, Palaiseau V. FALKO, University of Manchester Y. GALPERIN, Oslo University T. GIAMARCHI, University of Geneva A. KAMENEV, University of Minnesota J. MOORE, University of California at Berkeley - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - DEADLINES FOR APPLICATION: 24 April 2017 if needing financial suport and/or visa, otherwise: 21 May 2017. 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. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Secretary contact: N. Ivanissevich, e-mail: smr3136@ictp.it ICTP ICTP pio@ictp.it 31 Jul 2017 - 4 Aug 2017