The Nature of Superfluidity in Ultracold Fermi Gases Near Feshbach Resonances
arXiv:cond-mat/0309329 · doi:10.1103/PhysRevA.69.063610
Abstract
We study the superfluid state of atomic Fermi gases using a BCS-BEC crossover theory. Our approach emphasizes non-condensed fermion pairs which strongly hybridize with their (Feshbach-induced) molecular boson counterparts. These pairs lead to pseudogap effects above $T_c$ and non-BCS characteristics below. We discuss how these effects influence the experimental signatures of superfluidity.
4 pages, 3 figures, submitted to PRA Rapid Communications; introduction rewritten, figure replaced