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Phys Rev Lett. 2001 Feb 19;86(8):1406-9.

Intermittent implosion and pattern formation of trapped Bose-Einstein condensates with an attractive interaction.

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Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan.


The collapsing dynamics of a trapped Bose-Einstein condensate with attractive interaction are revealed to exhibit two previously unknown phenomena. During the collapse, the condensate undergoes a series of rapid implosions that occur intermittently within a very small region. When the sign of the interaction is suddenly switched from repulsive to attractive, e.g., by the Feshbach resonance, density fluctuations grow to form various patterns such as a shell structure.

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