The Nature of Superfluidity in Ultracold Fermi Gases Near Feshbach Resonances

Details The Nature of Superfluidity in Ultracold Fermi Gases Near Feshbach Resonances The Nature of Superfluidity in Ultracold Fermi Gases Near Feshbach Resonances

2003-09-12

arxiv.org/abs/cond-mat/0309329v2

Phys. Rev. A 69, 063610(2004)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures, submitted to PRA Rapid Communications; introduction rewritten, figure replaced

Scientific paper

10.1103/PhysRevA.69.063610

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.

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