Nonergodic dynamics for an impurity interacting with bosons in tilted lattice
Disordered Systems and Neural Networks
2025-07-31 v2 Quantum Gases
Atomic Physics
Quantum Physics
Abstract
The fate of the single particle immersed in and interacting with a bath of other particles localized in a tilted lattice is investigated. For tilt values comparable to the tunneling rate a slow-down of the dynamics is observed without, however, a clear localization of the impurity. For large tilt and strong interactions the motion of the impurity resembles that in the Kronig-Penney potential. The dynamics depends on the initial distribution of tilted bosons. It shows delocalized dynamics for a regular, density wave like distribution and a localization if tilted bosons are randomly distributed.
Cite
@article{arxiv.2306.06705,
title = {Nonergodic dynamics for an impurity interacting with bosons in tilted lattice},
author = {Pedro R. Nicácio Falcão and Jakub Zakrzewski},
journal= {arXiv preprint arXiv:2306.06705},
year = {2025}
}
Comments
12 pp.version close to accepted in PRB