BEC-BCS crossover in an optical lattice
- 28 September 2006
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 74 (3), 033621
- https://doi.org/10.1103/physreva.74.033621
Abstract
We present the microscopic theory for the BEC-BCS crossover of an atomic Fermi gas in an optical lattice, showing that the Feshbach resonance underlying the crossover in principle induces strong multiband effects. Nevertheless, the BEC-BCS crossover itself can be described by a single-band model since it occurs at magnetic fields that are relatively far away from the Feshbach resonance. A criterion is proposed for the latter, which is obeyed by most known Feshbach resonances in ultracold atomic gases.Keywords
Other Versions
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