Controlled collapse of a Bose-Einstein condensate.
Controlled collapse of a Bose-Einstein condensate.
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DOI：
10.1103/physrevlett.86.4211
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发表时间：
2001-02
影响因子：
8.6
通讯作者：
J. L. Roberts;J. L. Roberts;N. Claussen;N. Claussen;S. Cornish;S. Cornish;Elizabeth A. Donley;Elizabeth A. Donley;Eric A. Cornell;Eric A. Cornell;C. Wieman;C. Wieman
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文献类型：
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作者：
J. L. Roberts;J. L. Roberts;N. Claussen;N. Claussen;S. Cornish;S. Cornish;Elizabeth A. Donley;Elizabeth A. Donley;Eric A. Cornell;Eric A. Cornell;C. Wieman;C. Wieman
研究了玻色-爱因斯坦凝聚体（BEC）在吸引相互作用下的不稳定点。稳定的85 Rb BEC被创建，然后通过使用Feshbach共振将原子-原子相互作用从排斥缓慢地改变为吸引而导致崩溃。在一个临界值，观察到一个突然的转变，原子从冷凝喷射。通过测量这种转变的开始作为数量和吸引力相互作用强度的函数，我们确定了稳定性条件为N（a的绝对值）/ a（ho）= 0.459+/-0.012+/-0.054，略低于预测值0.574。
The point of instability of a Bose-Einstein condensate (BEC) due to attractive interactions was studied. Stable 85Rb 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(absolute value of a) / a(ho) = 0.459+/-0.012+/-0.054, slightly lower than the predicted value of 0.574.