Reversal of relaxation due to dephasing environment
arXiv:1503.03618 · doi:10.1103/PhysRevA.91.052112
Abstract
We show that any finite quantum system can be coupled to a dephasing environment in such a way that the internal mechanism responsible for relaxation of observables acting on can be effectively canceled. By adjusting this coupling, the difference between the initial and the long--time expectation values of any observable on 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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