Bose Condensate made of Atoms with Attractive Interaction is Metastable

Details Bose Condensate made of Atoms with Attractive Interaction is Metastable Bose Condensate made of Atoms with Attractive Interaction is Metastable

1995-12-01

arxiv.org/abs/cond-mat/9512008v3

Physics

Condensed Matter

Replacement is supposed to get figures in place

Scientific paper

Recent experiments with trapped cooled atoms have produced evidences for Bose-Einstein condensation. Among the atoms used are $^7Li$ ones, with attractive low energy interaction. Stability of their condensate is studied, with a conclusion that for a number of atoms below the critical value there exist a metastable minimum, separated from collapse by a potential barrier. The lifetime due to tunneling is estimated: it is unlikely to happen in the present experiment. Although in experimental conditions most of the atoms are not in the condensate, we argue that they only slightly affect the stability conditions for the condensate evaluated at T=0.

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