Dilute Bose-Einstein condensate in a trap: Characteristic lengths and critical velocities

被引：3
|
作者：
Fetter, AL [1 ]
机构：
[1] Stanford Univ, Dept Phys, Stanford, CA 94305 USA
[2] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 1999年 / 13卷 / 5-6期
关键词：
D O I：
10.1142/S0217979299000539
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The Bogoliubov approximation and the Gross-Pitaevskii equation characterize the effect of repulsive interactions on a dilute ideal Bose-Einstein gas in a spherical harmonic trap. For large N, the interactions expand the condensate relative to an ideal Bose gas; both the speed of sound and critical angular velocity Omega(c1) for creation of a quantized vortex depend crucially on the interparticle repulsion through the coherence length xi.
引用
收藏
页码：643 / 649
页数：7
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