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 …

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 …

Observation of many-body scarring in a Bose-Hubbard quantum simulator

GX Su, H Sun, A Hudomal, JY Desaules, ZY Zhou… - Physical Review …, 2023 - APS
The ongoing quest for understanding nonequilibrium dynamics of complex quantum
systems underpins the foundation of statistical physics as well as the development of …

Many-body Hilbert space scarring on a superconducting processor

P Zhang, H Dong, Y Gao, L Zhao, J Hao, JY Desaules… - Nature Physics, 2023 - nature.com
Quantum many-body scarring (QMBS) is a recently discovered form of weak ergodicity
breaking in strongly interacting quantum systems, which presents opportunities for mitigating …

Prominent quantum many-body scars in a truncated Schwinger model

JY Desaules, A Hudomal, D Banerjee, A Sen, Z Papić… - Physical Review B, 2023 - APS
The high level of control and precision achievable in current synthetic quantum matter
setups has enabled first attempts at quantum-simulating various intriguing phenomena in …

Algebraic theory of quantum synchronization and limit cycles under dissipation

B Buča, C Booker, D Jaksch - SciPost Physics, 2022 - scipost.org
Synchronization is a phenomenon where interacting particles lock their motion and display
non-trivial dynamics. Despite intense efforts studying synchronization in systems without …

Stark localization as a resource for weak-field sensing with super-Heisenberg precision

X He, R Yousefjani, A Bayat - Physical Review Letters, 2023 - APS
Gradient fields can effectively suppress particle tunneling in a lattice and localize the wave
function at all energy scales, a phenomenon known as Stark localization. Here, we show …

Weak ergodicity breaking through the lens of quantum entanglement

Z Papić - Entanglement in Spin Chains: From Theory to Quantum …, 2022 - Springer
Recent studies of interacting systems of quantum spins, ultracold atoms, and correlated
fermions have shed a new light on how isolated many-body systems can avoid rapid …

Group theoretic approach to many-body scar states in fermionic lattice models

K Pakrouski, PN Pallegar, FK Popov, IR Klebanov - Physical Review Research, 2021 - APS
It has been shown [K. Pakrouski et al., Phys. Rev. Lett. 125, 230602 (2020) PRLTAO 0031-
9007 10.1103/PhysRevLett. 125.230602] that three families of highly symmetric states are …

Genuine many-body quantum scars along unstable modes in Bose-Hubbard systems

Q Hummel, K Richter, P Schlagheck - Physical review letters, 2023 - APS
The notion of many-body quantum scars is associated with special eigenstates, usually
concentrated in certain parts of Hilbert space, that give rise to robust persistent oscillations in …