A Theoretical Realization of a Fractional Quantized Hall Nematic
Michael Mulligan - University of California, Riverside
Condensed matter physics is the branch of physics that studies systems of very large numbers of particles in a condensed state, like solids or liquids. Condensed matter physics wants to answer questions like: why is a material magnetic? Or why is it insulating or conducting? Or new, exciting questions like: what materials are good to make a reliable quantum computer? Can we describe gravity as the behavior of a material? The behavior of a system with many particles is very different from that of its individual particles. We say that the laws of many body physics are emergent or collective. Emergence explains the beauty of physics laws.
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Bipartite Fluctuations as a Probe of Many-Body Entanglement
Francis Song - Yale University
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Causal Structure of MERA
Cédric Bény - Leibniz University Hannover
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Evaporation of 2-Dimensional Black Holes
Fethi Ramazanoglu - Princeton University
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Many-body Entanglement: From Topological Order to Quantum Computation
Xie Chen - California Institute of Technology
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Topological Semimetals
Anton Burkov - University of Waterloo
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Topology in Real and Momentum Space: Vortex Majorana Modes and Weyl Semimetals
Pavan Hosur - University of California, Berkeley
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Condensed Matter - Lecture 15
Nandini Trivedi - Ohio State University
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Condensed Matter - Lecture 14
Nandini Trivedi - Ohio State University
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A Theoretical Realization of a Fractional Quantized Hall Nematic
Michael Mulligan - University of California, Riverside
A fractional quantized Hall nematic (FQHN) is a novel phase in which a fractional quantum Hall conductance coexists with broken rotational symmetry characteristic of a nematic. Both the topological and symmetry-breaking order present are essential for the description of the state, e..g, in terms of… -
Fractional Chern and Topological Insulators
Recent years have seen a renewed interest, both theoretically and experimentally, in the search for topological states of matter. On the theoretical side, while much progress has been achieved in providing a general classification of non-interacting topological states, the fate of these phases in… -
Bipartite Fluctuations as a Probe of Many-Body Entanglement
Francis Song - Yale University
The scaling of entanglement entropy, and more recently the full entanglement spectrum, have become useful tools for characterizing certain universal features of quantum many-body systems. Although entanglement entropy is difficult to measure experimentally, we show that for systems that can be… -
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Causal Structure of MERA
Cédric Bény - Leibniz University Hannover
The multiscale entanglement renormalization ansatz can be reformulated in terms of a causality constraint on discrete quantum dynamics. This causal structure is that of de Sitter space with a flat spacelike boundary, where the volume of a spacetime region corresponds to the number of variational… -
Evaporation of 2-Dimensional Black Holes
Fethi Ramazanoglu - Princeton University
Violation of unitarity in black hole evaporation has been puzzling physicist since the seminal work of Hawking in the seventies. Although there are hopes for a resolution of the problem in a full theory of quantum gravity, it has eluded us so far. Even less ambitious efforts considering only quantum… -
Current Induced Magnetization Dynamics in Spin-orbit Coupled Thin Film Ferromagnets
Dmytro Pesin - University of Utah
We consider the effect of an in-plane current on the magnetization dynamics of a quasi-two-dimensional spin-orbit coupled nanoscale itinerant ferromagnet. By solving the appropriate kinetic equation for an itinerant electron ferromagnet, we show that Rashba spin-orbit interaction provides transport… -
Many-body Entanglement: From Topological Order to Quantum Computation
Xie Chen - California Institute of Technology
Many-body entanglement, the special quantum correlation that exists among a large number of quantum particles, underlies interesting topics in both condensed matter and quantum information theory. On the one hand, many-body entanglement is essential for the existence of topological order in… -
Topological Semimetals
Anton Burkov - University of Waterloo
I will describe our recent work on a new topological phase of matter: topological Weyl semimetal. This phase arises in three-dimensional (3D) materials, which are close to a critical point between an ordinary and a topological insulator. Breaking time-reversal symmetry in such materials, for example… -
Topology in Real and Momentum Space: Vortex Majorana Modes and Weyl Semimetals
Pavan Hosur - University of California, Berkeley
Topology has many different manifestations in condensed matter physics. Real space examples include topological defects such as vortices, while momentum space ones include topological band structures and singularities in the electronic dispersion. In this talk, I will focus on two examples. The… -
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