Volume 65, Number 6, March 2004
|Page(s)||749 - 752|
|Published online||01 March 2004|
Collective oscillations of a trapped superfluid Fermi gas near a Feshbach resonance
Dipartimento di Fisica, Università di Trento and BEC-INFM I-38050 Povo (TN), Italy
Accepted: 14 January 2004
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.
PACS: 03.75.-b – Matter waves / 03.75.Ss – Degenerate Fermi gases / 67.40.Db – Quantum statistical theory; ground state, elementary excitations
© EDP Sciences, 2004
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