Controlled collapse of a Bose-Einstein condensate

被引：367

作者：

Roberts, JL ^{[1
]}

Claussen, NR

Cornish, SL

Donley, EA

Cornell, EA

Wieman, CE

机构：

[1] JILA, Natl Inst Stand & Technol, Boulder, CO 80309 USA

[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.86.4211

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The point of instability of a Bose-Einstein condensate (BEC) due to attractive interactions was studied. Stable Rb-85 BECs were created and then caused to collapse by slowly changing the atom-atom interaction from repulsive to attractive using a Feshbach resonance. At a critical value, an abrupt transition was observed in which atoms were ejected from the condensate. By measuring the onset of this transition as a function of number and attractive interaction strength, we determined the stability condition to be N\a\/a(ho) = 0.459 +/- 0.012 +/- 0.054, slightly lower than the predicted Value of 0.574.

引用

页码：4211 / 4214

页数：4

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