BCS-BEC Crossover in a Gas of Fermi Atoms with a Feshbach Resonance
BCS-BEC Crossover in a Gas of Fermi Atoms with a Feshbach Resonance
We discuss the BCS-BEC crossover in a degenerate Fermi gas of two hyperfine states interacting close to a Feshbach resonance. We show that, by including fluctuation contributions to the free energy similar to that considered by Nozières and Schmitt-Rink, the character of the superfluid phase transition continuously changes from the …