MOSHE FLATO LECTURE SERIES 2011 COLLOQUIUA IN MATHEMATICS AND PHYSICS DATE: Thursday March 10, 2011 PLACE: Ben Gurion University, Senate hall SCHEDULE (please see abstracts below): 9:30 - 10:00 Gathering, light refreshments 10:15 - 10:30 Rivka Carmi, Ben Gurion University president. Opening remarks. 10:30 - 11:30 Mordehai Heiblum, See separate announcement. 11:35 - 12:40 Etienne Ghys, ENS Lyon Chirality in dynamics - Lunch - 14:00 - 14:55 F. Duncan M. Haldane, Princeton Topological insulators 15:35 - 16:30 Cedric Villani, IHP Paris Landau damping, or relaxation without entropy production: the limits of Boltzmann's paradigm 16:35 - 17:30 Subir Sachdev, Harvard Quantum criticality and gauge-gravity duality LUNCH AND TRAVEL INFORMATION: * Lunch will be provided to conference attendants. * Free transportation from the train station at Kiryat Gat will be provided to conference attendants. For those arriving by car, an entry permit to Ben Gurion University campus will be arranged. For both of these please contact the BGU mathematics department. Ina 08 6461689 <inaviv@math.bgu.ac.il> ADVANCE REGISTRATION FOR TRANSPORTATION IS REQUIRED. WEBPAGE: For more information please see: <http://www.math.bgu.ac.il/events/flato/2011-Flato-Lectures.html> ABSTRACTS: Etienne Ghys: "Chirality in Dynamics" Abstract: Consider a dynamical system in 3-space, induced by some vector field. Its trajectories, the phase portrait, may present some asymmetry with respect to a mirror image. I would like to discuss some examples of such "chiral vector fields". I'll introduce a family of "fully chiral" dynamics and explain some consequences on the topology of periodic orbits. F. Duncan M. Haldane, "Topological insulators" Abstract: TBA Moty Heiblum: "Entangled Electrons in the Solid State: Quantum Interference and Dephasing" Abstract: I will describe two connected experiments, where pairs of electrons were entangled in a solid state Mach-Zehnder Interferometer (MZI), leading to entirely different outcomes. In one experiment electrons in a 'which path' detector were entangled with electrons in a MZI, leading to total dephasing of the interference. Under these conditions, the interference that was lost had been recovered by doing a 'post selection' type measurement (via cross-correlating currents); proving that the phase information stayed in the system. In another experiment, making use of two MZIs (in a novel 'two particle interferometer'), two remote, indistinguishable, electrons were entangled only due to their exchange statistics, namely, without ever interacting with each other (in a similar fashion to the Hanbury Brown - Twist photonic experiment). Though each electron's paths did not enclose a flux, cross correlating the current fluctuations in the two separate detectors revealed Aharonov-Bohm flux dependent oscillations. Subir Sachdev: "Quantum criticality and gauge-gravity duality" Abstract: Quantum critical points (or phases) are special locations in parameter space where the ground state wavefunction has long-range and scale-invariant quantum entanglement between the local degrees of freedom. Such points are also the key to explaining a wide variety of experiments on many modern electronic materials. In recent years, ideas from string theory on the duality between quantum gauge and gravity theories have provided a new physical perspective on quantum criticality. I will give an overview of these developments and their future prospects. Cedric Villani: "Landau damping, or relaxation without entropy production: the limits of Boltzmann's paradigm" Abstract: Boltzmann's statistical entropy, the notion of macroscopic irreversibility and molecular chaos, and the Boltzmann equation were at the basis of a little conceptual revolution at the end of the nineteenth century. In 1946, Landau shocked the scientific community by finding irreversibility where there did not seem to be. This ended the reign of entropy as the dominant explanation for irreversible behavior. It took another 2/3 of a century before Landau's contribution was fully justified, and, unexpectedly, related to some of the other most famous paradoxes of classical mechanics. The present talk will explain in simple terms these conceptual revolutions. It will be complementary to the preceding talk at the Weizmann Institute, and independent of it. --------------------------------------------------------- Technion Math Net-2 (TECHMATH2) Editor: Michael Cwikel <techm@math.technion.ac.il> Announcement from: Barak Weiss <barakw@cs.bgu.ac.il>