Density profile of a superfluid Fermi gas with a phase slip

Abstract

BEC(Bose Einstein Condensation)-BCS(Bardeen Schrieffer Cooper) crossover is currently one of the main research focuses in the area of cold atoms and BEC. In this paper, we study in detail the phenomenon of a phase slip in a superfluid Fermi gas near a Feshbach resonance, based on our previous work. The density profiles of a superfluid Fermi gas with a phase slip at various temperatures are computed by numerical method. Our results show that the phase-slip phenomenon can provide a direct experimental evidence of the superfluid phase.