Equilibrium state of a trapped two-dimensional Bose gas

被引：56

作者：

Rath, Steffen P. ^{[1
]}

Yefsah, Tarik ^{[1
]}

Guenter, Kenneth J. ^{[1
]}

Cheneau, Marc ^{[1
]}

Desbuquois, Remi ^{[1
]}

Holzmann, Markus ^{[2
,3
]}

Krauth, Werner ^{[4
]}

Dalibard, Jean ^{[1
]}

机构：

[1] Univ Paris 06, Lab Kastler Brossel, CNRS, Ecole Normale Super, F-75005 Paris, France

[2] Univ Paris 06, Lab Phys Theor Matiere Condensee, CNRS, F-75005 Paris, France

[3] Univ Grenoble 1, Lab Phys & Modelisat Milieux Condenses, CNRS, F-38042 Grenoble, France

[4] Univ Paris Diderot, Univ Paris 06, CNRS, Lab Phys Stat,Ecole Normale Super, F-75005 Paris, France

来源：

PHYSICAL REVIEW A | 2010年 / 82卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.82.013609

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study experimentally and numerically the equilibrium density profiles of a trapped two-dimensional Rb-87 Bose gas and investigate the equation of state of the homogeneous system using the local density approximation. We find a clear discrepancy between in situ measurements and quantum Monte Carlo simulations, which we attribute to a nonlinear variation of the optical density of the atomic cloud with its spatial density. However, good agreement between experiment and theory is recovered for the density profiles measured after time of flight, taking advantage of their self-similarity in a two-dimensional expansion.

引用

页数：5

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