Correlations in an expanding gas of hard-core bosons

被引：80

作者：

Gangardt, D. M. ^{[1
]}

Pustilnik, M. ^{[2
]}

机构：

[1] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[2] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA

来源：

PHYSICAL REVIEW A | 2008年 / 77卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevA.77.041604

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We consider a longitudinal expansion of a one-dimensional gas of hard-core bosons suddenly released from a trap. We show that the broken translational invariance in the initial state of the system is encoded in correlations between the bosonic occupation numbers in the momentum space. The correlations are protected by the integrability and exhibit no relaxation during the expansion.

引用

页数：4

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