Weak-ergodicity-breaking via lattice supersymmetry-Reference-Cited by-同舟云学术

Weak-ergodicity-breaking via lattice supersymmetry

Published:2020-10-07 Issue: Volume:4 Page:339
ISSN:2521-327X
Container-title:Quantum
language:en
Short-container-title:Quantum

Author:

Surace Federica Maria¹^ORCID,Giudici Giuliano¹^ORCID,Dalmonte Marcello¹^ORCID

Affiliation:

1. The Abdus Salam International Center for Theoretical Physics, Strada Costiera 11, 34151 Trieste, Italy, and SISSA, via Bonomea 265, 34136 Trieste, Italy

Abstract

We study the spectral properties of D-dimensional N=2 supersymmetric lattice models. We find systematic departures from the eigenstate thermalization hypothesis (ETH) in the form of a degenerate set of ETH-violating supersymmetric (SUSY) doublets, also referred to as many-body scars, that we construct analytically. These states are stable against arbitrary SUSY-preserving perturbations, including inhomogeneous couplings. For the specific case of two-leg ladders, we provide extensive numerical evidence that shows how those states are the only ones violating the ETH, and discuss their robustness to SUSY-violating perturbations. Our work suggests a generic mechanism to stabilize quantum many-body scars in lattice models in arbitrary dimensions.

Publisher

Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften

Subject

Physics and Astronomy (miscellaneous),Atomic and Molecular Physics, and Optics

Link

https://quantum-journal.org/papers/q-2020-10-07-339/pdf/

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