On the critical point of an interacting two-dimensional trapped Bose gas

被引：0

作者：

T. P. Simula

机构：

[1] Okayama University,Department of Physics

来源：

The European Physical Journal B | 2009年 / 68卷

关键词：

03.75.Lm Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations; 05.30.Jp Boson systems; 67.85.De Dynamic properties of condensates; excitations, and superfluid flow;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

We consider a quantized vortex excitation in a two-dimensional, harmonically trapped Bose gas and derive an equation for the Berezinskii-Kosterlitz-Thouless transition temperature based on a simple free-energy argument. We relate the critical phase-space density at the transition to the ratio between the entropy gain and the corresponding cost in energy of creating a free vortex excitation in the system.

引用

页码：453 / 455

页数：2

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