Nonuniform mixed-parity superfluid state in Fermi gases

We study the effects of dipole interaction on the superfluidity in a homogeneous Fermi gas with population imbalance. We show that the Fulde-Ferrell-Larkin-Ovchinnikov phase is replaced by another nonuniform superfluid phase, in which the order parameter has a nonzero triplet component induced by the dipole interaction.