Pairing Symmetry in the Anisotropic Fermi Superfluid under p-wave Feshbach Resonance

Abstract

The anisotropic Fermi superfluid of ultra-cold Fermi atoms under the p-wave Feshbach resonance is studied theoretically. The pairing symmetry of the ground state is determined by the strength of the atom-atom magnetic dipole interaction. It is $k_z$ for a strong dipole interaction; while it becomes $k_z-i\beta k_y$, up to a rotation about z, for a weak one (Here $\beta$ < 1 is a numerical coefficient). By changing the external magnetic field or the atomic gas density, a phase transition between these two states can be driven. We discuss how the pairing symmetry of the ground state can be determined in the time-of-flight experiments.

12 pages, 7 figures

References in corpus (5)

• Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas
• Molecular Probe of Pairing in the BEC-BCS Crossover
• Anisotropic Fermi Superfluid via p-wave Feshbach Resonance
• Fermion Superfluids of Non-Zero Orbital Angular Momentum near Resonance
• Feshbach-Resonant Interactions in 40K and 6Li Degenerate Fermi Gases

Cited by in corpus (6)

• Induced p-wave superfluidity in two dimensions: Brane world in cold atoms and nonrelativistic defect CFTs
• Confinement-induced p-wave resonances from s-wave interactions
• The Role of the Effective Range in Resonantly Interacting Fermi Gases: How Breaking Scale Symmetry Affects the Bulk Viscosity
• Dip-hump temperature dependence of Specific Heat and Effects of Pairing Fluctuations in the Weak-coupling Side of a $p$-wave Interacting Fermi Gas
• Multipolar Fermi-surface deformation in a Rydberg-dressed Fermi gas with long-range anisotropic interactions
• Strong-coupling Properties of a $p$-wave Interacting Fermi Gas on the Viewpoint of Specific Heat at Constant Volume