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arXiv · 1102.2469

Strong thermalization of the two-component Bose-Hubbard model at finite temperatures

J. M. Zhang·C. Shen·W. M. Liu
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Abstract

We study thermalization of a two-component Bose-Hubbard model by exact diagonalization. Initially the two components do not interact and are each at equilibrium but with different temperatures. As the on-site inter-component interaction is turned on, perfect thermalization occurs. Remarkably, not merely those simple "realistic" physical observables thermalize but even the density matrix of the \textit{whole} system---the time-averaged density matrix of the system can be well approximated by that of a canonical ensemble. A conjecture about this fact is put forward.

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J. M. Zhang, C. Shen, W. M. Liu. 2013-08-26. Strong thermalization of the two-component Bose-Hubbard model at finite temperatures. https://doi.org/10.1103/physreva.85.013637

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