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

页码：643 / 649

页数：7

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