Collective oscillations of a trapped Fermi gas near a Feshbach resonance

Details Collective oscillations of a trapped Fermi gas near a Feshbach resonance Collective oscillations of a trapped Fermi gas near a Feshbach resonance

2003-12-23

arxiv.org/abs/cond-mat/0312614v1

Physics

Condensed Matter

3 pages, including 1 figure

Scientific paper

10.1209/epl/i2004-10001-5

The frequencies of the collective oscillations of a harmonically trapped Fermi gas interacting with large scattering lengths are calculated at zero temperature using hydrodynamic theory. Different regimes are considered, including the molecular Bose-Einstein condensate and the unitarity limit for collisions. We show that the frequency of the radial compressional mode in an elongated trap exhibits a pronounced non monotonous dependence on the scattering length, reflecting the role of the interactions in the equation of state.

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