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arXiv · 1503.03618

Reversal of relaxation due to dephasing environment

Marcin Mierzejewski·Janez Bonca·Jerzy Dajka
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Abstract

We show that any finite quantum system $S$ can be coupled to a dephasing environment in such a way that the internal mechanism responsible for relaxation of observables acting on $S$ can be effectively canceled. By adjusting this coupling, the difference between the initial and the long--time expectation values of any observable on $S$ can be tuned to arbitrarily small however nonzero value. This statement is exemplified and visualized by numerical studies of relaxation in a generic one-dimensional system of interacting fermions.

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Marcin Mierzejewski, Janez Bonca, Jerzy Dajka. 2015-03-12. Reversal of relaxation due to dephasing environment. https://doi.org/10.1103/physreva.91.052112

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