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arXiv · 0810.1704

DC and AC Josephson effects with superfluid Fermi atoms across a Feshbach resonance

L. Salasnich·F. Ancilotto·N. Manini·F. Toigo
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Abstract

We show that both DC and AC Josephson effects with superfluid Fermi atoms in the BCS-BEC crossover can be described at zero temperature by a nonlinear Schrodinger equation (NLSE). By comparing our NLSE with mean-field extended BCS calculations, we find that the NLSE is reliable in the BEC side of the crossover up to the unitarity limit. The NLSE can be used for weakly-linked atomic superfluids also in the BCS side of the crossover by taking the tunneling energy as a phenomenological parameter.

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L. Salasnich, F. Ancilotto, N. Manini, F. Toigo. 2008-10-09. DC and AC Josephson effects with superfluid Fermi atoms across a Feshbach resonance. https://doi.org/10.1134/s1054660x09040173

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