Finite-temperature theory of the trapped two-dimensional Bose gas

被引：42

作者：

Gies, C

van Zyl, BP

Morgan, SA

Hutchinson, DAW

机构：

[1] Univ Otago, Dept Phys, Dunedin, New Zealand

[2] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

[3] UCL, Dept Phys & Astron, London WC1E 6BT, England

来源：

PHYSICAL REVIEW A | 2004年 / 69卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.69.023616

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a Hartree-Fock-Bogoliubov (HFB) theoretical treatment of the two-dimensional trapped Bose gas and indicate how semiclassical approximations to this and other formalisms have lead to confusion. We numerically obtain results for the quantum-mechanical HFB theory within the Popov approximation and show that the presence of the trap stabilizes the condensate against long wavelength fluctuations. These results are used to show where phase fluctuations lead to the formation of a quasicondensate.

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页数：4

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