Critical temperature of Bose-Einstein condensation for weakly interacting Bose gas in a potential trap

被引：3

作者：

Yu, XC ^{[1
]}

Ye, YT ^{[1
]}

Wu, YF ^{[1
]}

Xie, K ^{[1
]}

Cheng, L ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Coll Optoelect Informat, Chengdu 610054, Peoples R China

来源：

SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY | 2005年 / 48卷 / 05期

关键词：

Bose-Einstein condensation; critical temperature; bose gas;

D O I：

10.1360/142005-166

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The critical temperature of Bose-Einstein condensation at minimum momentum state for weakly interacting Bose gases in a power-law potential and the deviation of the critical temperature from ideal bose gas are studied. The effect of interaction on the critical temperature is ascribed to the ratiao alpha/lambda(c)A, where a is the scattering length for s wave and A, is lambda(c) Broglie wavelength at critical temperature. As alpha/lambda(c)<<1/(2 pi)(2), the interaction is negligible. The presented deviation of the critical temperature for three dimensional harmonic potential is well in agreement with recent measurement of critical temperature for Rb-87 bose gas trapped in a harmonic well.

引用

页码：521 / 528

页数：8

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