Soliton in BCS superfluid Fermi gas
Jacek Dziarmaga, Krzysztof Sacha
Abstract
We analyze a superfluid state of two species gas of fermions trapped in a quasi-1D harmonic potential and interacting via attractive s-wave collisions. It is shown that the gap equation posesses a self consistent solution with an antisymmetric gap function. The gap function has a localized soliton or kink in the center of the trap.
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