Effect of polarization on superfluidity in low density neutron matter
Abstract
The singlet-state quasi-particle interaction in neutron matter is examined on the basis of results of a detailed evaluation of the Landau Fermi-liquid parameters for pure neutron effects, including polarization effects. This means that the interaction induced by exchange of density and spin-density excitations is taken into account. It is shown that polarization actually works to suppress the pairing matrix elements, owing to the spin dependence of the quasi-particle interaction and, ultimately, the balance of attraction, repulsion, and spin dependence in the fundamental two-neutron interaction. Since the isotropic energy gap and the condensation energy in low-density neutron-star matter are extremely sensitive functions of the pairing matrix elements, they will also be suppressed by the polarizability of the neutron medium.
- Publication:
-
Physics Letters A
- Pub Date:
- April 1976
- Bibcode:
- 1976PhLA...61..331C
- Keywords:
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- Neutron Stars;
- Polarization Characteristics;
- Superfluidity;
- Electron Energy;
- Isotropic Media;
- Particle Interactions;
- Astrophysics