Yang-Yang thermodynamics on an atom chip

被引：202

作者：

van Amerongen, A. H. ^{[1
]}

van Es, J. J. P. ^{[1
]}

Wicke, P. ^{[1
]}

Kheruntsyan, K. V. ^{[2
]}

van Druten, N. J. ^{[1
]}

机构：

[1] Univ Amsterdam, Van der Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands

[2] Univ Queensland, Sch Phys Sci, ARC Ctr Excellence Quantum Atom Opt, Brisbane, Qld 4072, Australia

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.100.090402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the behavior of a weakly interacting nearly one-dimensional trapped Bose gas at finite temperature. We perform in situ measurements of spatial density profiles and show that they are very well described by a model based on exact solutions obtained using the Yang-Yang thermodynamic formalism, in a regime where other, approximate theoretical approaches fail. We use Bose-gas focusing [I. Shvarchuck , Phys. Rev. Lett. 89, 270404 (2002)] to probe the axial momentum distribution of the gas and find good agreement with the in situ results.

引用

页数：4

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