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.
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页数：5
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