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

共 26 条

[21]

ROBERTS JL, PHYSICS0104053

[22] TIME-DEPENDENT SOLUTION OF THE NONLINEAR SCHRODINGER-EQUATION FOR BOSE-CONDENSED TRAPPED NEUTRAL ATOMS [J].

RUPRECHT, PA ;

HOLLAND, MJ ;

BURNETT, K ;

EDWARDS, M .

PHYSICAL REVIEW A, 1995, 51 (06) :4704-4711

[23] Measurements of collective collapse in a Bose-Einstein condensate with attractive interactions [J].

Sackett, CA ;

Gerton, JM ;

Welling, M ;

Hulet, RG .

PHYSICAL REVIEW LETTERS, 1999, 82 (05) :876-879

[24] STABILITY OF SPIN-ALIGNED HYDROGEN AT LOW-TEMPERATURES AND HIGH MAGNETIC-FIELDS - NEW FIELD-DEPENDENT SCATTERING RESONANCES AND PREDISSOCIATIONS [J].

STWALLEY, WC .

PHYSICAL REVIEW LETTERS, 1976, 37 (24) :1628-1631

[25] CONDITIONS FOR BOSE-EINSTEIN CONDENSATION IN MAGNETICALLY TRAPPED ATOMIC CESIUM [J].

TIESINGA, E ;

MOERDIJK, AJ ;

VERHAAR, BJ ;

STOOF, HTC .

PHYSICAL REVIEW A, 1992, 46 (03) :R1167-R1170

[26] Fate of a Bose-Einstein condensate with an attractive interaction [J].

Ueda, M ;

Huang, K .

PHYSICAL REVIEW A, 1999, 60 (04) :3317-3320

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