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Breakdown of time-dependent mean-field theory for a one-dimensional condensate of impenetrable bosons

M. D. Girardeau, E. M. Wright

cond-mat.softarXiv:cond-mat/0002416

Abstract

We show that the time-dependent nonlinear Schrodinger equation of mean-field theory has limited utility for a one-dimensional condensate of impenetrable bosons. Mean-field theory with its associated order parameter predicts interference between split condensates that are recombined, whereas an exact many-body treatment shows minimal interference.

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