二分玻色-哈伯德模型的热化

Thermalization of Bipartite Bose-Hubbard Models.

作者信息

Khripkov Christine, Cohen Doron, Vardi Amichay

机构信息

Department of Chemistry, Ben-Gurion University , Beer-Sheva 84105, Israel.

Department of Physics, Ben-Gurion University , Beer-Sheva 84105, Israel.

出版信息

J Phys Chem A. 2016 May 19;120(19):3136-41. doi: 10.1021/acs.jpca.5b11176. Epub 2016 Jan 5.

DOI:10.1021/acs.jpca.5b11176

PMID:26701599

Abstract

We study the time evolution of a bipartite Bose-Hubbard model prepared far from equilibrium. When the classical dynamics is chaotic, we observe ergodization of the number distribution and a constant increase of the entanglement entropy between the constituent subsystems until it saturates to thermal equilibrium values. No thermalization is obtained when the system is launched in quasi-integrable phase space regions.

摘要

我们研究了远离平衡态制备的二分玻色-哈伯德模型的时间演化。当经典动力学是混沌的时候，我们观察到数分布的遍历化以及组成子系统之间纠缠熵的持续增加，直到它达到热平衡值并趋于饱和。当系统在准可积相空间区域启动时，不会出现热化现象。