Kolomeitsev, Evgeni E., 1970-

Spin excitonic and diffusive modes in superfluid Fermi liquids / E. E. Kolomeitsev, D. N. Voskresensky. -- The role of the particle-particle p-wave spin interaction in Fermi liquids with an s-wave pairing is studied. Depending on the sign of the interaction, there arises either a new exciton collective mode below the pair-breaking threshold or a diffusive excitation mode above the threshold. The Landau parameters that control the interaction strength are evaluated for various systems: dilute fermion gases, a degenerate electron liquid, metals, atomic nuclei, and neutron matter. The interaction removes also the square-root singularity in the phase space of pairbreaking processes. How these effects influence the neutrino emissivity in neutron Cooper-pair recombinations in neutron stars is shown.

In Physical Review C. -- Maryland : American Physical Society, 2011. -- ISSN 2469-9985. -- ISSN 2469-9993. -- Vol. 84, no. 6 (2011), pp. [068801-1-068801-4]