Full Counting Statistics and Large Deviations in a Thermal 1D Bose Gas

被引：24

作者：

Arzamasovs, Maksims ^{[1
,2
,3
]}

Gangardt, Dimitri M. ^{[4
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Sci, Dept Appl Phys, Xian 710049, Shaanxi, Peoples R China

[2] Xi An Jiao Tong Univ, Shaanxi Prov Key Lab Quantum Informat & Quantum O, Xian 710049, Shaanxi, Peoples R China

[3] Univ Latvia, Inst Atom Phys & Spect, LV-1586 Riga, Latvia

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

来源：

PHYSICAL REVIEW LETTERS | 2019年 / 122卷 / 12期

关键词：

BOSONS;

D O I：

10.1103/PhysRevLett.122.120401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We obtain the distribution of a number of atoms in an interval (full counting statistics) for interacting bosons in one dimension. Our results are valid in the weakly interacting regime in a parametrically large window of temperatures and interval lengths. The obtained distribution significantly deviates from a Gaussian away from the quasicondensate regime, and, for sufficiently short intervals, the probability of large number fluctuations is strongly enhanced.

引用

页数：5

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