Sachdev-Ye-Kitaev models and beyond: Window into non-Fermi liquids

D Chowdhury, A Georges, O Parcollet… - Reviews of Modern Physics, 2022 - APS
This is a review of the Sachdev-Ye-Kitaev (SYK) model of compressible quantum many-
body systems without quasiparticle excitations, and its connections to various theoretical …

Finite-temperature transport in one-dimensional quantum lattice models

B Bertini, F Heidrich-Meisner, C Karrasch, T Prosen… - Reviews of Modern …, 2021 - APS
Over the last decade impressive progress has been made in the theoretical understanding
of transport properties of clean, one-dimensional quantum lattice systems. Many physically …

[HTML][HTML] Time-evolution methods for matrix-product states

S Paeckel, T Köhler, A Swoboda, SR Manmana… - Annals of Physics, 2019 - Elsevier
Matrix-product states have become the de facto standard for the representation of one-
dimensional quantum many body states. During the last few years, numerous new methods …

Operator spreading in random unitary circuits

A Nahum, S Vijay, J Haah - Physical Review X, 2018 - APS
Random quantum circuits yield minimally structured models for chaotic quantum dynamics,
which are able to capture, for example, universal properties of entanglement growth. We …

Operator hydrodynamics, OTOCs, and entanglement growth in systems without conservation laws

CW von Keyserlingk, T Rakovszky, F Pollmann… - Physical Review X, 2018 - APS
Thermalization and scrambling are the subject of much recent study from the perspective of
many-body quantum systems with locally bounded Hilbert spaces (“spin chains”), quantum …

Ergodicity breaking arising from Hilbert space fragmentation in dipole-conserving Hamiltonians

P Sala, T Rakovszky, R Verresen, M Knap, F Pollmann - Physical Review X, 2020 - APS
We show that the combination of charge and dipole conservation—characteristic of fracton
systems—leads to an extensive fragmentation of the Hilbert space, which, in turn, can lead …

Operator spreading and the emergence of dissipative hydrodynamics under unitary evolution with conservation laws

V Khemani, A Vishwanath, DA Huse - Physical Review X, 2018 - APS
We study the scrambling of local quantum information in chaotic many-body systems in the
presence of a locally conserved quantity like charge or energy that moves diffusively. The …

Diffusive hydrodynamics of out-of-time-ordered correlators with charge conservation

T Rakovszky, F Pollmann, CW von Keyserlingk - Physical Review X, 2018 - APS
The scrambling of quantum information in closed many-body systems, as measured by out-
of-time-ordered correlation functions (OTOCs), has received considerable attention lately …

Observing emergent hydrodynamics in a long-range quantum magnet

MK Joshi, F Kranzl, A Schuckert, I Lovas, C Maier… - Science, 2022 - science.org
Identifying universal properties of nonequilibrium quantum states is a major challenge in
modern physics. A fascinating prediction is that classical hydrodynamics emerges …

Quantum information scrambling in a trapped-ion quantum simulator with tunable range interactions

MK Joshi, A Elben, B Vermersch, T Brydges, C Maier… - Physical Review Letters, 2020 - APS
In ergodic many-body quantum systems, locally encoded quantum information becomes, in
the course of time evolution, inaccessible to local measurements. This concept of …