Vortex formation in a rotating two-component Fermi gas

Details Vortex formation in a rotating two-component Fermi gas Vortex formation in a rotating two-component Fermi gas

2011-05-18

arxiv.org/abs/1105.3644v2

Phys. Rev. A84:023609,2011

Physics

Condensed Matter

Quantum Gases

21 pages, 17 figures, revtex. References added, minor other modifications

Scientific paper

10.1103/PhysRevA.84.023609

A two-component Fermi gas with attractive s-wave interactions forms a superfluid at low temperatures. When this gas is confined in a rotating trap, fermions can unpair at the edges of the gas and vortices can arise beyond certain critical rotation frequencies. We compute these critical rotation frequencies and construct the phase diagram in the plane of scattering length and rotation frequency for different total number of particles. We work at zero temperature and consider a cylindrically symmetric harmonic trapping potential. The calculations are performed in the Hartree-Fock-Bogoliubov approximation which implies that our results are quantitatively reliable for weak interactions.

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