Monday, July 29, 2013

1307.7036 (Dominique Delande et al.)

Many-body Matter-wave Dark Soliton    [PDF]

Dominique Delande, Krzysztof Sacha
The Gross-Pitaevskii equation -- which describes interacting bosons in the mean-field approximation -- possesses solitonic solutions in dimension one. For repulsively interacting particles, the stationary soliton is dark, i.e. is represented by a deep local density minimum. Many-body effects can lead to filling of the dark soliton. Using quasi-exact many-body simulations, we show that, in single experimental realizations, the soliton appears totally dark despite the fact that the single particle density tends to be uniform.
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