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

共 28 条

[1] Equation of state of a weakly interacting two-dimensional Bose gas studied at zero temperature by means of quantum Monte Carlo methods
Astrakharchik, G. E.
Boronat, J.
Casulleras, J.
Kurbakov, I. L.
Lozovik, Yu. E.
[J]. PHYSICAL REVIEW A, 2009, 79 (05):
[2] Quasicondensation and coherence in the quasi-two-dimensional trapped Bose gas
Bisset, R. N.
Davis, M. J.
Simula, T. P.
Blakie, P. B.
[J]. PHYSICAL REVIEW A, 2009, 79 (03):
[3] Analysis of the Holzmann-Chevallier-Krauth theory for the trapped quasi-two-dimensional Bose gas
Bisset, R. N.
Baillie, D.
Blakie, P. B.
[J]. PHYSICAL REVIEW A, 2009, 79 (01):
[4] Observation of a 2D Bose Gas: From Thermal to Quasicondensate to Superfluid
Clade, P.
Ryu, C.
Ramanathan, A.
Helmerson, K.
Phillips, W. D.
[J]. PHYSICAL REVIEW LETTERS, 2009, 102 (17)
[5] Zero-temperature damping of Bose-Einstein condensate oscillations by vortex-antivortex pair creation
Fedichev, PO
Fischer, UR
Recati, A
[J]. PHYSICAL REVIEW A, 2003, 68 (01): : 4
[6] Realization of Bose-Einstein condensates in lower dimensions -: art. no. 130402
Görlitz, A
Vogels, JM
Leanhardt, AE
Raman, C
Gustavson, TL
Abo-Shaeer, JR
Chikkatur, AP
Gupta, S
Inouye, S
Rosenband, T
Ketterle, W
[J]. PHYSICAL REVIEW LETTERS, 2001, 87 (13) : 130402/1 - 130402/4
[7] The trapped two-dimensional Bose gas:: from Bose-Einstein condensation to Berezinskii-Kosterlitz-Thouless physics
Hadzibabic, Z.
Krueger, P.
Cheneau, M.
Rath, S. P.
Dalibard, J.
[J]. NEW JOURNAL OF PHYSICS, 2008, 10
[8] HADZIBABIC Z, ARXIV09121490, P13626
[9] Berezinskii-Kosterlitz-Thouless crossover in a trapped atomic gas
Hadzibabic, Zoran
Kruger, Peter
Cheneau, Marc
Battelier, Baptiste
Dalibard, Jean
[J]. NATURE, 2006, 441 (7097) : 1118 - 1121
[10] Obtaining the phase diagram and thermodynamic quantities of bulk systems from the densities of trapped gases
Ho, Tin-Lun
Zhou, Qi
[J]. NATURE PHYSICS, 2010, 6 (02) : 131 - 134

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