BCS-BEC crossover at finite temperature for superfluid trapped Fermi atoms

Details BCS-BEC crossover at finite temperature for superfluid trapped Fermi atoms BCS-BEC crossover at finite temperature for superfluid trapped Fermi atoms

2003-11-13

arxiv.org/abs/cond-mat/0311309v2

Phys.Rev.Lett.92:220404,2004

Physics

Condensed Matter

Superconductivity

revised version, to be published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.92.220404

We consider the BCS-BEC crossover for a system of trapped Fermi atoms at finite temperature, both below and above the superfluid critical temperature, by including fluctuations beyond mean field. We determine the superfluid critical temperature and the pair-breaking temperature as functions of the attractive interaction between Fermi atoms, from the weak- to the strong-coupling limit (where bosonic molecules form as bound-fermion pairs). Density profiles in the trap are also obtained for all temperatures and couplings.

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