Condensate fraction of a two-dimensional attractive Fermi gas
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- 16 July 2007
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 76 (1) , 015601
Abstract
We investigate the Bose-Einstein condensation of fermionic pairs in a two-dimensional uniform two-component Fermi superfluid obtaining an explicit formula for the condensate density as a function of the chemical potential and the energy gap. By using the mean-field extended Bardeen-Cooper-Schrieffer theory, we analyze, as a function of the bound-state energy, the off-diagonal long-range order in the crossover from the Bardeen-Cooper-Schrieffer state of weakly bound Cooper pairs to the Bose-Einstein condensate of strongly-bound molecular dimers.Keywords
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