Unitary polarized Fermi gas under adiabatic rotation

Details Unitary polarized Fermi gas under adiabatic rotation Unitary polarized Fermi gas under adiabatic rotation

2008-06-11

arxiv.org/abs/0806.1885v2

Physical Review A 78, 063603 (2008)

Physics

Condensed Matter

Other Condensed Matter

8 pages, 11 figures, discussion added according to referee report, final version as published

Scientific paper

10.1103/PhysRevA.78.063603

We discuss the effect of an adiabatic rotation on the phase separation between the superfluid and normal component of a trapped polarized Fermi gas at unitarity and zero temperature, under the assumption that quantized vortices are not formed. We show that the Chandrasekhar-Clogston limit $n_{\downarrow}/\n_{\uparrow}$ characterizing the local polarization in the normal phase at the interface is enhanced by the rotation as a consequence of the centrifugal effect. The density profiles (local and column integral) of the two spin species are calculated as a function of the angular velocity for different values of the polarization. The critical value of the angular velocity at which the superfluid exhibits a spontaneous quadrupole deformation is also calculated for the unpolarized case.

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