Format results
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Efficient Simulation of Quantum Transport in 1D
Frank Pollmann - Technical University of Munich (TUM)
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Observation of Fractional Quantum Anomalous Hall Effect
Xiaodong Xu - University of Washington
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Universal theory of strange metals
Subir Sachdev - Harvard University
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A single-channel Kondo impurity in the large s limit
Abijith Krishnan - Massachusetts Institute of Technology (MIT)
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Weak measurement in conformal field theory and holography - VIRTUAL
Shaokai Jian - Tulane University
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Levin-Wen is a gauge theory: entanglement from topology
Kyle Kawagoe - Ohio State University
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Charting the space of ground states with matrix product states
Marvin Qi - University of Colorado Boulder
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Boundary and plane defect criticality in the 3d O(N) model
Max Metlitski - Massachusetts Institute of Technology (MIT) - Department of Physics
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Fermi surface symmetric mass generation and its application in nickelate superconductor
Dachuan Lu - University of California, San Diego
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Quantum error-correcting codes from Abelian anyon theories
Tyler Ellison - Purdue University
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Efficient Simulation of Quantum Transport in 1D
Frank Pollmann - Technical University of Munich (TUM)
Tensor product states are powerful tools for simulating area-law entangled states of many-body systems. The applicability of such methods to the non-equilibrium dynamics of many-body systems is less clear due to the presence of large amounts of entanglement. New methods seek to reduce the numerical… -
Observation of Fractional Quantum Anomalous Hall Effect
Xiaodong Xu - University of Washington
The interplay between spontaneous symmetry breaking and topology can result in exotic quantum states of matter. A celebrated example is the quantum anomalous Hall (QAH) effect, which exhibits an integer quantum Hall effect at zero magnetic field due to topologically nontrivial bands and intrinsic… -
Classification and characterization of interacting crystalline insulators in (2+1)D
Francisco Vladimir Calvera Ciguenas - Stanford University
In this presentation, I will discuss our latest efforts to classify and characterize insulators in two spatial dimensions in the presence of interactions. I will focus on two examples, both on the square lattice. The first example is of bosonic insulators with symmetry G = p4m x K, where K is an… -
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A single-channel Kondo impurity in the large s limit
Abijith Krishnan - Massachusetts Institute of Technology (MIT)
The single-channel Kondo impurity problem is a classic example of strongly coupled physics. In the Kondo problem, a single magnetic impurity is placed in a metal — the resulting system exhibits interesting properties such as a resistance minimum as a function of temperature. The problem was solved… -
Rotation symmetry protected boundary modes in Abelian topological phases
Spatial symmetries can enrich the topological classification of interacting quantum matter and endow additional ``weak” topological indices upon systems with non-trivial strong topological invariants (protected by internal symmetries). In this talk, I will discuss the boundary physics of charge… -
Weak measurement in conformal field theory and holography - VIRTUAL
Shaokai Jian - Tulane University
Weak measurements can be viewed as a soft projection that interpolates between an identity operator and a projection operator, and can induce an effective central charge distinct from the unmeasured CFT. In the first part, I will discuss the effect of measurement and postselection on the critical… -
Levin-Wen is a gauge theory: entanglement from topology
Kyle Kawagoe - Ohio State University
The Levin-Wen model is known to produce a vast array of topological phases of matter. Among these theories are gauge theories such as the twisted quantum double. In this talk, we will show that the Levin-Wen model is itself a gauge theory. In particular, given a unitary fusion category C, we… -
Charting the space of ground states with matrix product states
Marvin Qi - University of Colorado Boulder
In this talk I will use matrix product states (MPS) to study topological families of gapped ground states in one spatial dimension. To such families I will describe how to associate a gerbe, a mathematical structure which generalizes the line bundle associated to gapped ground states in 0d… -
Boundary and plane defect criticality in the 3d O(N) model
Max Metlitski - Massachusetts Institute of Technology (MIT) - Department of Physics
It is known that the classical O(N) model in dimension d > 3 at its bulk critical point admits three boundary universality classes: the ordinary, the extraordinary and the special. The extraordinary fixed point corresponds to the bulk transition occurring in the presence of an ordered boundary… -
Fermi surface symmetric mass generation and its application in nickelate superconductor
Dachuan Lu - University of California, San Diego
Symmetric mass generation (SMG) is a novel interaction-driven mechanism that generates fermion mass without breaking symmetry, unlike the standard Anderson-Higgs mechanism. SMG can occur in the fermion system without quantum anomalies. In this talk, I will focus on the SMG for the systems with… -
Quantum error-correcting codes from Abelian anyon theories
Tyler Ellison - Purdue University
To perform reliable quantum computations in the midst of noise from the environment, it is imperative to use a quantum error-correcting code — i.e., a scheme for redundantly encoding information so that errors may be detected and corrected as they occur. One of the most promising classes of quantum…