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 …

Scrambling dynamics and out-of-time-ordered correlators in quantum many-body systems

S Xu, B Swingle - PRX quantum, 2024 - APS
This tutorial article introduces the physics of quantum information scrambling in quantum
many-body systems. The goals are to understand how to precisely quantify the spreading of …

Large- theory of critical Fermi surfaces

I Esterlis, H Guo, AA Patel, S Sachdev - Physical Review B, 2021 - APS
We describe the large-N saddle point, and the structure of fluctuations about the saddle
point, of a theory containing a sharp, critical Fermi surface in two spatial dimensions. The …

Operator growth in open quantum systems

T Schuster, NY Yao - Physical Review Letters, 2023 - APS
The spreading of quantum information in closed systems, often termed scrambling, is a
hallmark of many-body quantum dynamics. In open systems, scrambling competes with …

Tridiagonalizing random matrices

V Balasubramanian, JM Magan, Q Wu - Physical Review D, 2023 - APS
The Hungarian physicist Eugene Wigner introduced random matrix models in physics to
describe the energy spectra of atomic nuclei. As such, the main goal of random matrix theory …

Many-body quantum teleportation via operator spreading in the traversable wormhole protocol

T Schuster, B Kobrin, P Gao, I Cong, ET Khabiboulline… - Physical Review X, 2022 - APS
By leveraging shared entanglement between a pair of qubits, one can teleport a quantum
state from one particle to another. Recent advances have uncovered an intrinsically many …

Keldysh wormholes and anomalous relaxation in the dissipative Sachdev-Ye-Kitaev model

AM García-García, L Sá, JJM Verbaarschot, JP Zheng - Physical Review D, 2023 - APS
We study the out-of-equilibrium dynamics of a Sachdev-Ye-Kitaev (SYK) model, N fermions
with aq-body interaction of infinite range, coupled to a Markovian environment. Close to the …

Deep thermalization in constrained quantum systems

T Bhore, JY Desaules, Z Papić - Physical Review B, 2023 - APS
The concept of “deep thermalization” has recently been introduced to characterize moments
of an ensemble of pure states, resulting from projective measurements on a subsystem …

Semiclassical roots of universality in many-body quantum chaos

K Richter, JD Urbina, S Tomsovic - Journal of Physics A …, 2022 - iopscience.iop.org
Quantum chaos of many-body (MB) systems has been swiftly developing into a vibrant
research area at the interface between various disciplines, ranging from statistical physics to …

A sparse model of quantum holography

S Xu, L Susskind, Y Su, B Swingle - arXiv preprint arXiv:2008.02303, 2020 - arxiv.org
We study a sparse version of the Sachdev-Ye-Kitaev (SYK) model defined on random
hypergraphs constructed either by a random pruning procedure or by randomly sampling …