Thermal equilibration between two quantum systems

Details Thermal equilibration between two quantum systems Thermal equilibration between two quantum systems

2010-04-13

arxiv.org/abs/1004.2232v4

Phys. Rev. Lett. 106, 010405 (2011)

Physics

Condensed Matter

Statistical Mechanics

10 pages, 9 figures, including supplementary material

Scientific paper

10.1103/PhysRevLett.106.010405

Two identical finite quantum systems prepared initially at different temperatures, isolated from the environment, and subsequently brought into contact are demonstrated to relax towards Gibbs-like quasi-equilibrium states with a common temperature and small fluctuations around the time-averaged expectation values of generic observables. The temporal thermalization process proceeds via a chain of intermediate Gibbs-like states. We specify the conditions under which this scenario occurs and corroborate the quantum equilibration with two different models.

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