Vortex state in superfluid trapped Fermi gases at zero temperature
Georg M. Bruun, Luciano Viverit
We discuss various aspects of the single vortex state of a dilute superfluid atomic Fermi gas at $T=0.$ The energy of the vortex in a trapped gas is calculated and we provide an expression for the thermodynamic critical rotation frequency of the trap for its formation. Furthermore, we propose a method to detect the presence of a vortex by calculating the effect of its associated velocity field on the collective mode spectrum of the gas.
arXiv:cond-mat/0106011•Physical Review A•Nov 14, 2001•25 citations