Collisional properties of a polarized Fermi gas with resonant interactions

Year: 2008

Authors: Bruun G.M., Recati A., Pethick C.J., Smith H., Stringari S.

Autors Affiliation: Dipartimento di Fisica, Università di Trento and CNR-INFM BEC Center, I-38050 Povo, Trento, Italy;
Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark;
NORDITA, Roslagstullsbacken 21, 10691 Stockholm, Sweden

Abstract: Highly polarized mixtures of atomic Fermi gases constitute a novel Fermi liquid. We demonstrate how information on thermodynamic properties may be used to calculate quasiparticle scattering amplitudes even when the interaction is resonant and apply the results to evaluate the damping of the spin dipole mode. We estimate that under current experimental conditions the mode would be intermediate between the hydrodynamic and collisionless limits.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 100 (24)      Pages from: 240406  to: 240406

KeyWords: strongly interacting fermions; collisions; collective oscillations
DOI: 10.1103/PhysRevLett.100.240406

Citations: 49
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