Yang-Yang thermometry and momentum distribution of a trapped one-dimensional Bose gas

被引：43

作者：

Davis, M. J. ^{[1
]}

Blakie, P. B. ^{[2
]}

van Amerongen, A. H. ^{[3
]}

van Druten, N. J. ^{[3
]}

Kheruntsyan, K. V. ^{[1
]}

机构：

[1] Univ Queensland, Sch Math & Phys, Brisbane, Qld 4072, Australia

[2] Univ Otago, Dept Phys, Jack Dodd Ctr Quantum Technol, Dunedin, New Zealand

[3] Univ Amsterdam, Van der Waals Zeeman Inst, NL-1098 XH Amsterdam, Netherlands

来源：

PHYSICAL REVIEW A | 2012年 / 85卷 / 03期

基金：

澳大利亚研究理事会;

关键词：

THERMODYNAMICS;

D O I：

10.1103/PhysRevA.85.031604

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We describe the use of the exact Yang-Yang solutions for the one-dimensional Bose gas to enable accurate kinetic-energy thermometry based on the root-mean-square width of an experimentally measured momentum distribution. Furthermore, we use the stochastic projected Gross-Pitaevskii theory to provide a quantitative description of the full momentum distribution measurements of Van Amerongen et al. [Phys. Rev. Lett. 100, 090402 (2008)]. We find the fitted temperatures from the stochastic projected Gross-Pitaevskii approach are in excellent agreement with those determined by Yang-Yang kinetic-energy thermometry.

引用

页数：5

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