Transverse breathing mode of an elongated Bose-Einstein condensate

被引：145

作者：

Chevy, F

Bretin, V

Rosenbusch, P

Madison, KW

Dalibard, J

机构：

[1] Ecole Normale Super, Lab Kastler Brossel, Unite Rech, F-75005 Paris, France

[2] Univ Paris 06, CNRS, F-75252 Paris 05, France

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.88.250402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study experimentally the transverse monopole mode of an elongated rubidium condensate. Because of the scaling invariance of the nonlinear Schrodinger (Gross-Pitaevskii) equation, the oscillation is monochromatic and sinusoidal at short times, even under strong excitation. For ultralow temperatures, the quality factor Q = omega(0)/gamma(0) can exceed 2000, where omega(0) and gamma(0) are the mode angular frequency and damping rate. This value is much larger than any previously reported for other eigenmodes of a condensate. We also present the temperature variation of omega(0) and gamma(0).

引用

页数：4

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