Stability of scar states in 2D PXP model against random disorders
Abstract
Recently a class of quantum systems exhibiting weak ergodicity breaking has attracted much attention. These systems feature a special band of eigenstates called quantum many-body scar states in the energy spectrum. In this work we study the fate of quantum many-body scar states in a two-dimensional lattice against random disorders. We show that in both the square lattice and the honeycomb lattice the scar states can persist up to a finite disorder strength, before eventually being erased by the disorder. We further study the localization properties of the system in the presence of even stronger disorders and show that whether a full localization transition occurs depends on the type of disorder we introduce. Our study thus reveals the fascinating interplay between disorder and quantum many-body scarring in a two-dimensional system.
Keywords
Cite
@article{arxiv.2102.08241,
title = {Stability of scar states in 2D PXP model against random disorders},
author = {Ke Huang and Yu Wang and Xiao Li},
journal= {arXiv preprint arXiv:2102.08241},
year = {2021}
}
Comments
11 pages, 11 figures, published version