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

2003/12/23 by S. Stringari, Sandro Stringari · 7 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Atomic physics #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Fermi Gamma-ray Space Telescope #Fermi gas #Feshbach resonance #Molecule #Physics #Quantum mechanics #Quantum, superfluid, helium dynamics #Resonance (particle physics) #Scattering #Scattering length #Superfluidity #Unitarity #cond-mat

paper · pdf · doi:10.1209/epl/i2004-10001-5

3 pages, including 1 figure

arxiv created 2003/12/23 · openalex publication_date 2004/03/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

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.

Citations

• Emergence of a molecular Bose–Einstein condensate from a Fermi gas
• Bose-Einstein Condensation of Molecules
• Observation of Bose-Einstein Condensation of Molecules

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