Vortex state in a superfluid Fermi gas near a Feshbach resonance

Yuki Kawaguchi; Tetsuo Ohmi

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arXiv · cond-mat/0411018

Vortex state in a superfluid Fermi gas near a Feshbach resonance

Yuki Kawaguchi·Tetsuo Ohmi

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Abstract

We consider a single vortex in a superfluid Fermi gas in the BCS-BEC crossover regime near a Feshbach resonance. The effect of the molecular Bose-Einstein condensate upon the vortex structure is discussed within the mean field approximation at zero temperature. Using the self-consistent Bogoliubov-de Gennes equation of the fermion-boson coupled model, we calculate density distributions of atoms and molecules. As the number of the molecules increases, both atomic and molecular density changes from BCS-like distribution to BEC-like. We also study the change of the vortex core size in the crossover regime.

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Yuki Kawaguchi, Tetsuo Ohmi. 2005-04-05. Vortex state in a superfluid Fermi gas near a Feshbach resonance. https://arxiv.org/abs/cond-mat/0411018

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