Spin excitonic and diffusive modes in superfluid Fermi liquids
Superconductivity
2015-05-30 v1 Solar and Stellar Astrophysics
Nuclear Theory
Abstract
A role of a particle-particle p-wave spin interaction in Fermi liquids with s-wave pairing is studied. Depending on the sign of the interaction there arises either the new exciton collective mode below the pair-breaking threshold or the diffusive excitation mode above the threshold. The Landau parameters which control the interaction strength are evaluated for various systems: the dilute fermion gases, degenerate electron liquid, metals, atomic nuclei and neutron matter. The interaction removes also the square-root singularity in the phase space of pair breaking processes. It is shown how these effects influence the neutrino emissivity in the neutron Cooper-pair recombinations in neutron stars.
Cite
@article{arxiv.1108.5899,
title = {Spin excitonic and diffusive modes in superfluid Fermi liquids},
author = {E. E. Kolomeitsev and D. N. Voskresensky},
journal= {arXiv preprint arXiv:1108.5899},
year = {2015}
}
Comments
4 pages 3 figures