Quantum many-body scars and Hilbert space fragmentation: A review of exact results

S Moudgalya, BA Bernevig… - Reports on Progress in …, 2022‏ - iopscience.iop.org
The discovery of quantum many-body scars (QMBS) both in Rydberg atom simulators and in
the Affleck–Kennedy–Lieb–Tasaki spin-1 chain model, have shown that a weak violation of …

Fracton phases of matter

M Pretko, X Chen, Y You - International Journal of Modern Physics …, 2020‏ - World Scientific
Fractons are a new type of quasiparticle which are immobile in isolation, but can often move
by forming bound states. Fractons are found in a variety of physical settings, such as spin …

Hilbert space fragmentation and commutant algebras

S Moudgalya, OI Motrunich - Physical Review X, 2022‏ - APS
We study the phenomenon of Hilbert space fragmentation in isolated Hamiltonian and
Floquet quantum systems using the language of commutant algebras, the algebra of all …

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 …

Exploring the regime of fragmentation in strongly tilted Fermi-Hubbard chains

T Kohlert, S Scherg, P Sala, F Pollmann… - Physical Review Letters, 2023‏ - APS
Intriguingly, quantum many-body systems may defy thermalization even without disorder.
One example is so-called fragmented models, where the many-body Hilbert space …

Thirty milliseconds in the life of a supercooled liquid

C Scalliet, B Guiselin, L Berthier - Physical Review X, 2022‏ - APS
We combine the swap Monte Carlo algorithm to long multi-CPU molecular dynamics
simulations to analyze the equilibrium relaxation dynamics of model supercooled liquids …

Fractons

RM Nandkishore, M Hermele - Annual Review of Condensed …, 2019‏ - annualreviews.org
Fracton phases constitute a new class of quantum state of matter. They are characterized by
excitations that exhibit restricted mobility, being either immobile under local Hamiltonian …

Thermalization and prethermalization in isolated quantum systems: a theoretical overview

T Mori, TN Ikeda, E Kaminishi… - Journal of Physics B …, 2018‏ - iopscience.iop.org
The approach to thermal equilibrium, or thermalization, in isolated quantum systems is
among the most fundamental problems in statistical physics. Recent theoretical studies have …

Anomalous diffusion in dipole-and higher-moment-conserving systems

J Feldmeier, P Sala, G De Tomasi, F Pollmann… - Physical Review Letters, 2020‏ - APS
The presence of global conserved quantities in interacting systems generically leads to
diffusive transport at late times. Here, we show that systems conserving the dipole moment …

Theoretical perspective on the glass transition and amorphous materials

L Berthier, G Biroli - Reviews of modern physics, 2011‏ - APS
A theoretical perspective is provided on the glass transition in molecular liquids at thermal
equilibrium, on the spatially heterogeneous and aging dynamics of disordered materials …