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Spin and density conserving theory of superfluidity: From BCS to BEC

Hao Guo

Published Jan 1, 2010• 0 citations
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Theory of Superfluidity

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Physical Review•Dec 5, 1967•1 citation
We consider 3D and 2D fully (100%) polarized resonance superfluid Fermi-gas with p-wave pairing in the regime of BCS-BEC crossover. For low temperatures T « T cp ( T cp is a p-wave critical temperature) we evaluate the contribution of the superfluid fermionic quasiparticles and bosonic collective waves (phonons) in the specific heat ( C v ) and the normal density (ρ n ) in the BCS-regime for the chemical potential μ > 0, in BEC-regime for μ < 0 and in the interesting intermediate regime for μ → 0. We discuss an experimental possibility to observe a chiral anomaly (which leads to mass-current non-conservation at T = 0) in 3D A1-phase in ballistic regime as well as a topological term with a charge Q = 1 in the 2D fully polarized axial phase in BCS-regime.