Many body exchange effects close to the s-wave Feshbach resonance in   two-component Fermi systems: Is a triplet superfluid possible?
  We suggest that the exchange fluctuations close to a Feshbach resonance in a two-component Fermi gas can result in an effective p-wave attractive interaction. On the BCS side of a Feshbach resonance, the magnitude of this effective interaction is comparable to the s-wave interaction, therefore leading to a possible spin-triplet superfluid in the range of temperatures of actual experiments. We also show that the particle-hole exchange fluctuations introduce an effective scattering length which does not diverge, as the standard mean-field one does. Finally, using the effective interaction quantities we are able to model the molecular binding energy on the BEC side of the resonance. 
Sergio Gaudio (1), Jason Jackiewicz (2), Kevin S. Bedell (3) ((1)   Universita' La Sapienza di Roma and CNR-ISC, Italy (2) M...