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Evolution from BCS to BEC superfluidity in p-wave Fermi gases

M. Iskin·C. A. R. Sá de Melo
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Abstract

We consider the evolution of superfluid properties of a three dimensional p-wave Fermi gas from weak (BCS) to strong (BEC) coupling as a function of scattering volume. We analyse the order parameter, quasi-particle excitation spectrum, chemical potential, average Cooper pair size and the momentum distribution in the ground state ($T = 0$). We also discuss the critical temperature $T_{\rm c}$, chemical potential and number of unbound, scattering and bound fermions in the normal state ($T = T_{\rm c}$). Lastly, we derive the time-dependent Ginzburg-Landau equation for $T \approx T_{\rm c}$ and extract the Ginzburg-Landau coherence length.

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M. Iskin, C. A. R. Sá de Melo. 2005-11-25. Evolution from BCS to BEC superfluidity in p-wave Fermi gases. https://doi.org/10.1103/physrevlett.96.040402

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