Quantum many-body systems with kinetic constraints exhibit intriguing relaxation dynamics. Recent experimental progress in the field of cold atomic gases offers a handle for probing collective behavior of such systems, in particular for understanding the interplay between constraints and disorder. Here we explore a spin chain with facilitation constraints --- a feature which is often used to model classical glass formers --- together with disorder that originates from spin-spin interactions. The specific model we study, which is realized in a natural fashion in Rydberg quantum simulators, maps onto an XX-chain with non-local disorder. Our study shows that the combination of constraints and seemingly unconventional disorder may lead to interesting non-equilibrium behaviour in experimentally relevant setups.
@article{arxiv.1811.01667,
title = {Localization in spin chains with facilitation constraints and disordered interactions},
author = {Maike Ostmann and Matteo Marcuzzi and Juan P. Garrahan and Igor Lesanovsky},
journal= {arXiv preprint arXiv:1811.01667},
year = {2019}
}