Collapse of a Bose-Einstein condensate induced by fluctuations of the laser intensity
Josselin GarnierLaboratoire de Statistique et Probabilités, Université, Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex 4, FranceF. Kh. AbdullaevLaboratoire de Statistique et Probabilités, Université, Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex 4, FranceB. B. BaizakovLaboratoire de Statistique et Probabilités, Université, Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex 4, France
ABI
Аннотация
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 three-dimensional Gross-Pitaevskii equation confirm analytical predictions for small and moderate values of mean-field interaction.
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