3 years ago

Irreversible dynamics in quantum many-body systems.

Markus Schmitt, Stefan Kehrein

Irreversibility, despite being a necessary condition for thermalization, still lacks a sound understanding in the context of quantum many-body systems. In this work we approach this question by studying the behavior of generic many-body systems under imperfect effective time reversal, where the imperfection is introduced as a perturbation of the many-body state at the point of time reversal. Based on numerical simulations of the full quantum dynamics we demonstrate that observable echos occurring in this setting decay exponentially with a rate that is intrinsic to the system meaning that the dynamics is effectively irreversible.

Publisher URL: http://arxiv.org/abs/1711.00015

DOI: arXiv:1711.00015v1

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