Unitary polarized Fermi gas under adiabatic rotation

Year: 2008

Authors: Bausmerth I., Recati A., Stringari S.

Autors Affiliation: Dipartimento di Fisica, Università di Trento and CNR-INFM BEC Center, I-38050 Povo, Trento, Italy;
Physik Department, Technische Universität München, D-85747 Garching, Germany

Abstract: 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↓∕n↑ 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.

Journal/Review: PHYSICAL REVIEW A

Volume: 78 (6)      Pages from: 063603-1  to: 063603-8

More Information: We acknowledge very useful discussions with Frederic Chevy, Stefano Giorgini, Carlos Lobo, Lev P. Pitaevskii, Christophe Salomon, Alberto Valli, and Martin Zwierlein. We also acknowledge support by the Ministero dell
KeyWords: Bose-Einstein condensation; density functional theory; fermion systems; phase separation; polarisation
DOI: 10.1103/PhysRevA.78.063603

Citations: 10
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