Superfluidity in atomic Fermi gases
arXiv:1101.2846 · doi:10.1016/j.physc.2009.11.012
Abstract
In a trapped atomic Fermi gas, one can tune continuously via a Feshbach resonance the effective pairing interaction between fermionic atoms from very weak to very strong. As a consequence, the low temperature superfluidity evolves continuously from the BCS type in the weak interaction limit to that of Bose-Einstein condensation in the strong pairing limit, exhibiting a BCS-BEC crossover. In this paper, we review recent experimental progress in atomic Fermi gases which elucidates the nature of the superfluid phase as the interaction is continuously tuned. Of particular interest is the intermediate or crossover regime where the -wave scattering length diverges. We will present an intuitive pairing fluctuation theory, and show that this theory is in quantitative agreement with existing experiments in cold atomic Fermi gases.
4 pages, 4 figures in color, invited talk at the M2S-IX Tokyo conference, September 2009
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Cited by in corpus (3)
- Unusual destruction and enhancement of superfluidity of atomic Fermi gases by population imbalance in a one-dimensional optical lattice
- Zero density limit extrapolation of the superfluid transition temperature in a unitary atomic Fermi gas on a lattice
- Exact results for the Casimir force of a three-dimensional model of relativistic Bose gas in a film geometry