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arXiv · 1907.06711

Dynamical thermalization of interacting fermionic atoms in a Sinai-oscillator trap

Klaus M. Frahm·Leonardo Ermann·Dima L. Shepelyansky
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Abstract

We study numerically the problem of dynamical thermalization of interacting cold fermionic atoms placed in an isolated Sinai-oscillator trap. This system is characterized by a quantum chaos regime for one-particle dynamics. We show that for a many-body system of cold atoms the interactions, with a strength above a certain quantum chaos border given by the Aberg criterion, lead to the Fermi-Dirac distribution and relaxation of many-body initial states to the thermalized state in absence of any contact with a thermostate. We discuss the properties of this dynamical thermalization and its links with the Loschmidt-Boltzmann dispute.

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Klaus M. Frahm, Leonardo Ermann, Dima L. Shepelyansky. 2019-07-15. Dynamical thermalization of interacting fermionic atoms in a Sinai-oscillator trap. https://doi.org/10.3390/condmat4030076

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