Analysis of the Holzmann-Chevallier-Krauth theory for the trapped quasi-two-dimensional Bose gas

被引：15

作者：

Bisset, R. N. ^{[1
]}

Baillie, D. ^{[1
]}

Blakie, P. B. ^{[1
]}

机构：

[1] Univ Otago, Dept Phys, Jack Dodd Ctr Quantum Technfol, Dunedin, New Zealand

来源：

PHYSICAL REVIEW A | 2009年 / 79卷 / 01期

关键词：

boson systems; fluctuations; radiation pressure; superfluidity; LONG-RANGE ORDER; 2-DIMENSIONAL SYSTEMS; EINSTEIN CONDENSATION; TRANSITION; PHASE;

D O I：

10.1103/PhysRevA.79.013602

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We provide an in-depth analysis of the theory proposed by Holzmann, Chevallier, and Krauth (HCK) [Europhys. Lett. 82, 30001 (2008)] for predicting the temperature at which the Berezinskii-Kosterlitz-Thouless (BKT) transition to a superfluid state occurs in the harmonically trapped quasi-two-dimensional (2D) Bose gas. Their theory is based on a mean-field model of the system density, and we show that the HCK predictions change appreciably when an improved mean-field theory and identification of the transition point is used. In this analysis we develop a consistent theory that provides a lower bound for the BKT transition temperature in the trapped quasi-2D Bose gas.

引用

页数：5

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