Part A Fermi LiquidsNo Access

PAIRING IN ASYMMETRICAL FERMI SYSTEMS

KHANDKER F. QUADER

Department of Physics, Kent State University, Kent, OH 44242, USA

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and

RENYUAN LIAO

Department of Physics, Kent State University, Kent, OH 44242, USA

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https://doi.org/10.1142/S0217979207043518Cited by:0 (Source: Crossref)

Abstract

We consider inter- and intra-species pairing interactions in an asymmetrical Fermi system. Using equation of motion method, we obtain coupled mean-field equations for superfluid gap functions and population densities. We construct a phase diagram across BCS-BEC regimes. Due to intra-species correlations, the BCS singlet superfluid state can sustain finite polarizations, P. For larger P, we find phase separations in BCS and BEC regimes. A superfluid phase exists for all P deep in BEC regime. Our results may apply to pairing in ultracold fermions, nuclear and quark matter physics.

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PAIRING IN ASYMMETRICAL FERMI SYSTEMS

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