Resonance theory of the crossover from Bardeen-Cooper-Schrieffer   superfluidity to Bose-Einstein condensation in a dilute Fermi gas
  We present a description of the behavior of a superfluid gas of fermions in the presence of a Feshbach resonance over the complete range of magnetic field detunings. Starting from a resonance Hamiltonian, we exploit a functional method to describe the continuous behavior from Bardeen-Cooper-Schrieffer to Bose-Einstein condensation type superfluidity. Our results show an ability for a resonance system to exhibit a high critical temperature comparable to the Fermi temperature. The results are derived in a manner that is shown to be consistent with the underlying microscopic scattering physics. 
J.N. Milstein, S.J.J.M.F. Kokkelmans, and M.J. Holland