Nonergodic dynamics for an impurity interacting with bosons in tilted lattice

Author:

Pedro R. Nicácio Falcão, Jakub Zakrzewski

Keyword:

Condensed Matter, Disordered Systems and Neural Networks, Disordered Systems and Neural Networks (cond-mat.dis-nn), Quantum Gases (cond-mat.quant-gas), Atomic Physics (physics.atom-ph), Quantum Physics (quant-ph)

journal:

date:

2023-06-10 16:00:00

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.

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