Crossover temperature of Bose-Einstein condensation in an atomic Fermi gas

Details Crossover temperature of Bose-Einstein condensation in an atomic Fermi gas Crossover temperature of Bose-Einstein condensation in an atomic Fermi gas

2004-02-24

arxiv.org/abs/cond-mat/0402579v1

Phys.Rev.Lett.92:130401,2004

Physics

Condensed Matter

Statistical Mechanics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.92.130401

We show that in an atomic Fermi gas near a Feshbach resonance the crossover between a Bose-Einstein condensate of diatomic molecules and a Bose-Einstein condensate of Cooper pairs occurs at positive detuning, i.e., when the molecular energy level lies in the two-atom continuum. We determine the crossover temperature as a function of the applied magnetic field and find excellent agreement with the experiment of Regal et al. [Phys. Rev. Lett. 92, 040403 (2004)] that has recently observed this crossover temperature.

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