Format results
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Exactly solvable model for a deconfined quantum critical point in 1D
Carolyn Zhang - University of Chicago
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Phase diagram of the honeycomb Floquet code
DinhDuy Tran Vu - University of Maryland, College Park
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Staying Ahead of the Curve(ature) in Topological Phases
Julian May-Mann - University of Illinois Urbana-Champaign
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Entanglement entropy in (1+1)-d with defects
Fei Yan - Rutgers University
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Entanglement Bootstrap and Remote Detectability
John McGreevy - University of California, San Diego
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Modular commutators in conformal field theory, topological order, and holography
Yijian Zou - Perimeter Institute for Theoretical Physics
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Tensor Processing Units (TPUs) as scientific supercomputers
Guifre Vidal - Alphabet (United States)
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Diamagnetic response and phase stiffness for interacting isolated narrow bands
Dan Mao - Massachusetts Institute of Technology (MIT)
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Geometric contribution to entanglement entropy and multipartite entanglement in two-dimensional chiral topological liquid
Yuhan Liu - University of Chicago
The multipartite entanglement structure for the ground states of two dimensional topological phases is an interesting albeit not well understood question. Utilizing the bulk-boundary correspondence, the tripartite entanglement calculation of 2d topological phases can be reduced to that on the vertex… -
Exactly solvable model for a deconfined quantum critical point in 1D
Carolyn Zhang - University of Chicago
We construct an exactly solvable lattice model for a deconfined quantum critical point (DQCP) in (1+1) dimensions. This DQCP occurs in an unusual setting, namely at the edge of a (2+1) dimensional bosonic symmetry protected topological phase (SPT) with ℤ2×ℤ2 symmetry. The DQCP describes a transition… -
Phase diagram of the honeycomb Floquet code
DinhDuy Tran Vu - University of Maryland, College Park
The Floquet code implements a periodic sequence of two-qubit measurements to realize the topological order. After each measurement round, the instantaneous stabilizer group can be mapped to a honeycomb toric code, thus explaining the topological feature. However, the code also possesses a time… -
Entanglement Linear Response — Extracting the Quantum Hall Conductance from a Single Bulk Wavefunction and Beyond
Ruihua Fan - Harvard University
In this talk, I will introduce the so-called entanglement linear response, i.e., response under entanglement generated unitary dynamics. As an application, I will show how it can be applied to certain anomalies in 1D CFTs. Moreover, I will apply it to extract the quantum Hall conductance from a… -
Staying Ahead of the Curve(ature) in Topological Phases
Julian May-Mann - University of Illinois Urbana-Champaign
Many topological phases of lattice systems display quantized responses to lattice defects. Notably, 2D insulators with C_n lattice rotation symmetry hosts a response where disclination defects bind fractional charge. In this talk, I will show that the underlying physics of the disclination-charge… -
Locality bounds on quantum dynamics with measurements
In non-relativistic systems, the Lieb-Robinson Theorem imposes an emergent speed limit (independent of the relativistic limit set by c), establishing locality under unitary quantum dynamics and constraining the time needed to perform useful quantum tasks. We have extended the Lieb-Robinson Theorem… -
Entanglement entropy in (1+1)-d with defects
Fei Yan - Rutgers University
In this talk I will explore perspectives of quantum entanglement in (1+1)-d systems in presence of defects. The talk consists of two parts. In the first part, I will talk about the ground state entanglement entropy for 1d quantum spin chains with defects, using the transverse field Ising model and… -
Entanglement Bootstrap and Remote Detectability
John McGreevy - University of California, San Diego
The Entanglement Bootstrap is a program to derive the universal properties of a phase of matter from a single representative wavefunction on a topologically-trivial region. Much (perhaps all) of the structure of topological quantum field theory can be extracted starting from a state satisfying two… -
Modular commutators in conformal field theory, topological order, and holography
Yijian Zou - Perimeter Institute for Theoretical Physics
The modular commutator is a recently discovered multipartite entanglement measure that quantifies the chirality of the underlying many-body quantum state. In this Letter, we derive a universal expression for the modular commutator in conformal field theories in 1+1 dimensions and discuss its salient… -
Tensor Processing Units (TPUs) as scientific supercomputers
Guifre Vidal - Alphabet (United States)
Google's TPUs were exclusively designed to accelerate and scale up machine learning workloads, amid the ongoing planet-wide race to build faster specialized hardware for artificial intelligence. But one must surely be able to use this hardware for other challenging computational tasks, right? We… -
Tackling old problems with new tools: from frustration to pairing in strongly correlated many body systems
Annabelle Bohrdt - Harvard University
New quantum simulation platforms provide an unprecedented microscopic perspective on the structure of strongly correlated quantum matter. This allows to revisit decade-old problems from a fresh perspective, such as the two-dimensional Fermi-Hubbard model, believed to describe the physics underlying… -
Diamagnetic response and phase stiffness for interacting isolated narrow bands
Dan Mao - Massachusetts Institute of Technology (MIT)
Superconductivity in electronic systems, where the non-interacting bandwidth for a set of isolated bands is small compared to the scale of the interactions, is a non-perturbative problem. Here we present a theoretical framework for computing the electromagnetic response in the limit of zero…