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Controlled Collapse of a Bose-Einstein Condensate

J. L. Roberts·N. R. Claussen·S. L. Cornish·E. A. Donley·E. A. Cornell·C. E. Wieman
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Abstract

The point of instability of a Bose-Einstein Condensate (BEC) due to attractive interactions was studied. Stable 85-Rb 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 funstion of number and attractive interactions strength, we determined the stability condition to be N|a|/(aho)=0.461(12)(54), slightly lower than the predicted value of 0.574.

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J. L. Roberts, N. R. Claussen, S. L. Cornish, E. A. Donley, E. A. Cornell, C. E. Wieman. 2001-02-07. Controlled Collapse of a Bose-Einstein Condensate. https://doi.org/10.1103/physrevlett.86.4211

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