Equilibration of a Tonks-Girardeau Gas Following a Trap Release

被引：134

作者：

Collura, Mario ^{[1
]}

Sotiriadis, Spyros

Calabrese, Pasquale

机构：

[1] Univ Pisa, Dipartimento Fis, I-56127 Pisa, Italy

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 24期

基金：

欧洲研究理事会;

关键词：

INTERACTING BOSE-GAS; QUANTUM-SYSTEMS; DYNAMICS; RELAXATION; CONDENSATE; BOSONS; STATE;

D O I：

10.1103/PhysRevLett.110.245301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the nonequilibrium dynamics of a Tonks-Girardeau gas released from a parabolic trap to a circle. We present the exact analytic solution of the many body dynamics and prove that, for large times and in a properly defined thermodynamic limit, the reduced density matrix of any finite subsystem converges to a generalized Gibbs ensemble. The equilibration mechanism is expected to be the same for all one-dimensional systems.

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页数：5

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