Format results
-
From Anderson Insulators to Random Singlets
Srinivas Raghu - Stanford University
-
A construction of exotic metal and metal-insulator transition
Xiaochuan Wu - University of California, Santa Barbara
-
-
Realizing a dynamical topological phase without symmetry protection in trapped ions
Andrew Potter - University of British Columbia
-
-
Pivot Hamiltonians: a tale of symmetry, entanglement, and quantum criticality
Nathanan Tantivasadakarn - California Institute of Technology (Caltech)
-
Twisted bilayers: magic continuum, noncollinear magnetism and more
Zhu-Xi Luo - University of California, Santa Barbara
-
Large-N solvable models of measurement-induced criticality
Subhayan Sahu - Perimeter Institute for Theoretical Physics
-
Tuning multipolar orders and critical points in d-orbital Mott insulators
Arun Paramekanti - University of Toronto
-
Symmetry protected topological order in open quantum systems
Alex Turzillo - Perimeter Institute for Theoretical Physics
-
Infinite-Component Chern-Simons Theories in (3+1)d Systems
Meng Cheng - Yale University
-
Planckian Metals
Subir Sachdev - Harvard University
-
-
A construction of exotic metal and metal-insulator transition
Xiaochuan Wu - University of California, Santa Barbara
The charge resistivity/conductivity can take universal values in various scenarios of two-dimensional condensed matter systems. Well-known examples of universal resistivity include 2+1d quantum critical points, (fractional) quantum Hall effects, the criterion of two-dimensional “bad metal”, and the… -
Subdiffusion and ergodicity breaking in systems with emergent or microscopic dipole-moment conservation
Alan Morningstar - Citadel LLC
I will first give a brief overview of my research in the field of out-of-equilibrium quantum many- body physics, ranging from the theory of many-body localization, to the recent application of Tensor Processing Units for accelerating simulations of quantum dynamics. I’ll then focus on (1) the… -
Realizing a dynamical topological phase without symmetry protection in trapped ions
Andrew Potter - University of British Columbia
In thermal equilibrium, 1d bosonic systems (e.g. spin- or qubit- chains) cannot support intrinsically topological phases without symmetry protection. For example, the edge states of the Haldane spin chain are fragile to magnetic fields, in contrast to the absolutely stable Majorana edge states of a… -
Discretizing 2d conformal field theories: the lattice action of the conformal algebra
Grans Samuelsson - CEA Saclay
Conformal field theories (CFTs) are ubiquitous in theoretical physics as fixed points of renormalization, descriptions of critical systems and more. In these theories the conformal symmetry is a powerful tool in the computation of correlation functions, especially in 2 dimensions where the conformal… -
Pivot Hamiltonians: a tale of symmetry, entanglement, and quantum criticality
Nathanan Tantivasadakarn - California Institute of Technology (Caltech)
I will introduce the notion of Pivot Hamiltonians, a special class of Hamiltonians that can be used to "generate" both entanglement and symmetry. On the entanglement side, pivot Hamiltonians can be used to generate unitary operators that prepare symmetry-protected topological (SPT) phases by… -
Twisted bilayers: magic continuum, noncollinear magnetism and more
Zhu-Xi Luo - University of California, Santa Barbara
Van der Waals heterostructures provide a rich venue for exotic moir\’e phenomena. In this talk, I will present a couple of unconventional examples beyond the celebrated twisted bilayer graphene. I will start by twisted bilayer of square lattice with staggered flux, which exhibits a continuum range… -
Large-N solvable models of measurement-induced criticality
Subhayan Sahu - Perimeter Institute for Theoretical Physics
Competition between unitary dynamics that scramble quantum information non-locally and local measurements that probe and collapse the quantum state can result in a measurement-induced entanglement phase transition. We introduce large-N Brownian hybrid circuits acting on clusters of qubits, which… -
Tuning multipolar orders and critical points in d-orbital Mott insulators
Arun Paramekanti - University of Toronto
Traditionally, magnetism in solids deals with ordering patterns of the electron magnetic dipole moment, as probed, for instance, via neutron diffraction. However, f-electron heavy fermion systems are well-known candidates for more complex forms of symmetry breaking, involving higher-order magnetic… -
Symmetry protected topological order in open quantum systems
Alex Turzillo - Perimeter Institute for Theoretical Physics
I will discuss ongoing work on the robustness of symmetry protected topological (SPT) phases in open systems. By studying the evolution of non-local string order parameters, we find that one-dimensional SPT order is destabilized by couplings to the environment satisfying a weak symmetry condition… -
Infinite-Component Chern-Simons Theories in (3+1)d Systems
Meng Cheng - Yale University
Abstract: TBD -
Planckian Metals
Subir Sachdev - Harvard University
Many modern materials feature a “Planckian metal”: a phase of electronic quantum matter without quasiparticle excitations, and relaxation in a time of order Planck's constant divided by the absolute temperature. I will review recent progress in understanding such metals using insights from the…