Avalanches in a Bose-Einstein condensate

Details Avalanches in a Bose-Einstein condensate Avalanches in a Bose-Einstein condensate

2001-06-19

arxiv.org/abs/cond-mat/0106373v2

Phys. Rev. Lett. 87, 170404 (2001)

Physics

Condensed Matter

4 pages, 2 figures, 1 table

Scientific paper

10.1103/PhysRevLett.87.170404

Collisional avalanches are identified to be responsible for an 8-fold increase of the initial loss rate of a large 87-Rb condensate. We show that the collisional opacity of an ultra-cold gas exhibits a critical value. When exceeded, losses due to inelastic collisions are substantially enhanced. Under these circumstances, reaching the hydrodynamic regime in conventional BEC experiments is highly questionable.

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