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arXiv · 2306.06705

Nonergodic dynamics for an impurity interacting with bosons in tilted lattice

Pedro R. Nicácio Falcão·Jakub Zakrzewski
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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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Pedro R. Nicácio Falcão, Jakub Zakrzewski. 2023-06-11. Nonergodic dynamics for an impurity interacting with bosons in tilted lattice. https://doi.org/10.1103/physrevb.108.134201

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