Resonance theory of the crossover from Bardeen-Cooper-Schrieffer superfluidity to Bose-Einstein condensation in a dilute Fermi gas

J. N. Milstein, S. J. J. M. F. Kokkelmans, M. J. Holland
2002 Physical Review A. Atomic, Molecular, and Optical Physics  
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
more » ... ved in a manner that is shown to be consistent with the underlying microscopic scattering physics.
doi:10.1103/physreva.66.043604 fatcat:fyb2kk66m5hr5pv27lvw7wvbzu