Collapse of a Bose-Einstein condensate induced by fluctuations of the laser intensity

Details Collapse of a Bose-Einstein condensate induced by fluctuations of the laser intensity Collapse of a Bose-Einstein condensate induced by fluctuations of the laser intensity

2004-05-11

arxiv.org/abs/cond-mat/0405223v1

Phys. Rev. A 69, 053607 (2004)

Physics

Condensed Matter

Soft Condensed Matter

13 pages, 7 eps figures

Scientific paper

10.1103/PhysRevA.69.053607

The dynamics of a metastable attractive Bose-Einstein condensate trapped by a system of laser beams is analyzed in the presence of small fluctuations of the laser intensity. It is shown that the condensate will eventually collapse. The expected collapse time is inversely proportional to the integrated covariance of the time autocorrelation function of the laser intensity and it decays logarithmically with the number of atoms. Numerical simulations of the stochastic 3D Gross-Pitaevskii equation confirms analytical predictions for small and moderate values of mean field interaction.

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