Resonance superfluidity in a quantum degenerate Fermi gas - art. no. 120406

We consider the superfluid phase transition that arises when a Feshbach res onance pairing occurs in a dilute Fermi gas. We apply our theory to conside r a specific resonance in potassium (K-40), and find that for achievable ex perimental conditions, the transition to a superfluid phase is possible at the high critical temperature of about 0.5T(F). Observation of superfluidit y in this regime would provide the opportunity to experimentally study the crossover from the superfluid phase of weakly coupled fermions to the Bose- Einstein condensation of strongly bound composite bosons.