Format results
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From single-gap to multi-gap topological materials
Bartomeu Monserrat - University of Cambridge
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Exact results for metallic quantum critical points
Hart Goldman - Massachusetts Institute of Technology (MIT)
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From Neural density Operators to Tensor Networks
Filippo Vincentini - L'Ecole Polytechnique Federale de Lausanne (EPFL)
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Subsystem symmetry fractionalization in two dimensions
Michael Hermele - University of Colorado Boulder
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Nonlinear Bosonization of Fermi Surfaces: The Method of Coadjoint Orbits
Dam Thanh Son - University of Chicago
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An Exact Map Between the TBG (and multilayers) and Topological Heavy Fermions
Bogdan Bernevig - Princeton University
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Quantum States of Matter with Fractal Symmetries: Theory and realization with Rydberg atoms
Cenke Xu - University of California, Santa Barbara
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Measurement-induced criticality and charge-sharpening transitions
Romain Vasseur - University of Massachusetts Amherst
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From single-gap to multi-gap topological materials
Bartomeu Monserrat - University of Cambridge
Topology has become a powerful tool to classify and understand materials. The standard paradigm divides the energy bands into two groups separated by a gap, or with at most some low-dimensional band crossings. Single-gap topological materials include topological insulators, Chern insulators, and… -
Exact results for metallic quantum critical points
Hart Goldman - Massachusetts Institute of Technology (MIT)
I discuss how exact, non-perturbative results can be obtained for both optical transport and static susceptibilities in “Hertz-Millis” theories of Fermi surfaces coupled to critical bosons. Such models possess a large emergent symmetry and anomaly structure, which we leverage to fix these quantities… -
From Neural density Operators to Tensor Networks
Filippo Vincentini - L'Ecole Polytechnique Federale de Lausanne (EPFL)
In this talk I will discuss recent advances in Neural-Network parametrisations of pure and mixed quantum states that can be efficiently sampled. In the first part I will generalise the Neural Density Operator ansatz originally proposed by Torlai and Melko by combining two general ingredients that… -
Subsystem symmetry fractionalization in two dimensions
Michael Hermele - University of Colorado Boulder
Unlike conventional global symmetries that act on all of space, subsystem symmetries act only on rigid subspaces such as lines, planes or fractal regions. Such symmetries are of interest for their close connection to fracton physics and in their own right. In this talk, I discuss phenomena that can… -
Nonlinear Bosonization of Fermi Surfaces: The Method of Coadjoint Orbits
Dam Thanh Son - University of Chicago
We develop a new method for bosonizing the Fermi surface. In this method, a system with a Fermi surface is described as a coadjoint orbit of the group of canonical transformations. The method naturally parametrizes the Fermi surface by a bosonic field that depends on the spacetime coordinates and… -
An Exact Map Between the TBG (and multilayers) and Topological Heavy Fermions
Bogdan Bernevig - Princeton University
Magic-angle ( θ=1.05∘) twisted bilayer graphene (MATBG) has shown two seemingly contradictory characters: the localization and quantum-dot-like behavior in STM experiments, and delocalization in transport experiments. We construct a model, which naturally captures the two aspects, from the… -
Quantum States of Matter with Fractal Symmetries: Theory and realization with Rydberg atoms
Cenke Xu - University of California, Santa Barbara
In recent years, generalizations of the notion of symmetry have significantly broadened our view on states of matter. We will discuss some recent progress of understanding and realizing the "fractal symmetry", where the symmetric charge i.e. the generator of the symmetry is defined on a fractal… -
New frontiers in quantum simulation and computation with neutral atom arrays
Giulia Semeghini - Harvard University
Learning how to create, study, and manipulate highly entangled states of matter is key to understanding exotic phenomena in condensed matter and high energy physics, as well as to the development of useful quantum computers. In this talk, I will discuss recent experiments where we demonstrated the… -
Toward realization of novel superconductivity based on twisted van der Waals Josephson junction in Cuprates
Philip Kim - Columbia University
Twisted interfaces between stacked van der Waals Cuprate crystals enable tunable Josephson coupling, utilizing anisotropic superconducting order parameters. Employing a novel cryogenic assembly technique, we fabricate high-temperature Josephson junctions with an atomically sharp twisted interface… -
Measurement-induced criticality and charge-sharpening transitions
Romain Vasseur - University of Massachusetts Amherst
Monitored quantum circuits (MRCs) exhibit a measurement-induced phase transition between area-law and volume-law entanglement scaling. In this talk, I will argue that MRCs with a conserved charge additionally exhibit two distinct volume-law entangled phases that cannot be characterized by… -
Ultra Unification: Quantum Criticality and Deformation beyond the Standard Model
Juven Wang - Harvard University
We introduce a viewpoint that the Standard Model (SM) is a low-energy quantum vacuum arising from various neighbor Grand Unification (GUT) like vacua competition in an immense quantum phase diagram. In general, we find the SM arises near the gapless quantum critical regions between the competing… -
Exotic compressible quantum liquids and fractons in coupled wire models
Joseph Sullivan - Yale University
The coupled wire construction is a powerful method for studying exotic quantum phases of matter. In this talk I will discuss some recent work in which this technique was used to realize new types of 3D compressible quantum phases. These phases possess a U(1) charge conservation symmetry that is…