Breached Superfluidity via P-Wave Coupling

Abstract

Anisotropic pairing between fermion species with different fermi momenta opens two-dimensional areas of gapless excitations, thus producing a spatially homogeneous state with coexisting superfluid and normal fluids. This breached pairing state is stable and robust for arbitrarily small mismatch and weak p-wave coupling.

Comments: 4 pages, latex, 1 figure; improved according to referee's comments