Breathing modes of a fast rotating Fermi gas

Details Breathing modes of a fast rotating Fermi gas Breathing modes of a fast rotating Fermi gas

2007-02-13

arxiv.org/abs/cond-mat/0702318v2

Phys. Rev. A 75, 053609 (2007)

Physics

Condensed Matter

Statistical Mechanics

5 pages, 2 figures

Scientific paper

10.1103/PhysRevA.75.053609

We derive the frequency spectrum of the lowest compressional oscillations of a 3D harmonically trapped Fermi superfluid in the presence of a vortex lattice, treated in the diffused vorticity approximation within a hydrodynamic approach. We consider the general case of a superfluid at T=0 characterized by a polytropic equation of state ($\sim{n}^\gamma$), which includes both the Bose-Einstein condensed regime of dimers ($\gamma=1$) and the unitary limit of infinite scattering length ($\gamma=2/3$). Important limiting cases are considered, including the centrifugal limit, the isotropic trapping and the cigar geometry. The conditions required to enter the lowest Landau level and quantum Hall regimes at unitarity are also discussed.

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