title: Strongly interacting Fermi gases with density imbalance.
abstract: We consider density-imbalanced Fermi gases of atoms in the strongly interacting, i.e., unitarity, regime. The Bogoliubov-de Gennes equations for a trapped superfluid are solved. They take into account the finite size of the system, as well as give rise to both phase separation and Fulde-Ferrel-Larkin-Ovchinnikov-type oscillations in the order parameter. We show how radio-frequency spectroscopy reflects the phase separation, and can provide direct evidence of the FFLO-type oscillations via observing the nodes of the order parameter.
authors.affiliation: Nanoscience Center, Department of Physics, P.O. Box 35, FIN-40014, University of Jyväskylä, Finland.
authors.forename: J
authors.initials: J
authors.lastname: Kinnunen
authors.forename: L M
authors.initials: LM
authors.lastname: Jensen
authors.forename: P
authors.initials: P
authors.lastname: Törmä