Collapsing dynamics of attractive Bose-Einstein condensates

Details Collapsing dynamics of attractive Bose-Einstein condensates Collapsing dynamics of attractive Bose-Einstein condensates

2000-12-04

arxiv.org/abs/physics/0012004v1

Physics

Atomic Physics

4 pages, submitted for publication

Scientific paper

10.1016/S0375-9601(02)01385-3

The self-similar collapse of 3D and quasi-2D atom condensates with negative scattering length is examined. 3D condensates are shown to blow up following the scenario of {\it weak collapse}: The inner core of the condensate diverges with an almost zero particle number, while its tail distribution spreads out to large distances with a constant density profile. For this case, the 3-body recombination arrests the collapse, but it weakly dissipates the atoms. The confining trap then reforms the condensate at later times. In contrast, 2D condensates undergo a {\it strong collapse}: The atoms stay mainly located at center and recombination sequentially absorbs a significant amount of particles.

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