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arXiv · 0911.0815

Self-trapping of a Fermi super-fluid in a double-well potential in the BEC-unitarity crossover

S. K. Adhikari·Hong Lu·Han Pu
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Abstract

We derive a generalized Gross-Pitaevskii density-functional equation appropriate to study the Bose-Einstein condensate (BEC) of dimers formed of singlet spin-half Fermi pairs in the BEC-unitarity crossover while the dimer-dimer scattering length $a$ changes from 0 to $\infty$. Using an effective one-dimensional form of this equation, we study the phenomenon of dynamical self-trapping of a cigar-shaped Fermi super-fluid in the entire BEC-unitarity crossover in a double-well potential. A simple two-mode model is constructed to provide analytical insights. We also discuss the consequence of our study on the self-trapping of an atomic BEC in a double-well potential.

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S. K. Adhikari, Hong Lu, Han Pu. 2009-11-04. Self-trapping of a Fermi super-fluid in a double-well potential in the BEC-unitarity crossover. https://doi.org/10.1103/physreva.80.063607

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