Superfluid Phase Transitions in Dense Neutron Matter

Abstract

The phase transitions in a realistic system with triplet pairing, dense neutron matter, have been investigated. The spectrum of phases of the ${}^3{P}_2{-}^3{F}_2$ model, which adequately describes pairing in this system, is analytically constructed with the aid of a separation method for solving BCS gap equation in states of arbitrary angular momentum. In addition to solutions involving a single value of the magnetic quantum number (and its negative), there exist ten real multicomponent solutions. Five of the corresponding angle-dependent order parameters have nodes, and five do not. In contrast to the case of superfluid ${}^3$He, transitions occur between phases with nodeless order parameters. The temperature dependence of the competition between the various phases is studied.

11 pages, 2 figures

References in corpus (6)

• The equation of state for nucleon matter and neutron star structure
• 3P_2-3F_2 pairing in neutron matter with modern nucleon-nucleon potentials
• Nucleon-nucleon elastic scattering analysis to 2.5 GeV
• Universalities of Triplet Pairing in Neutron Matter
• Triplet Pairing in Neutron Matter
• Rearrangement of the Fermi Surface of Dense Neutron Matter and Direct Urca Cooling of Neutron Stars

Cited by in corpus (19)

• Superfluidity in nuclear systems and neutron stars
• Axions from cooling compact stars: pair-breaking processes
• ${}^3{P}_2$-${}^3{F}_2$ Pairing in Dense Neutron Matter: The Spectrum of Solutions
• Superfluid phases of triplet pairing and rapid cooling of the neutron star in Cassiopeia A
• Phase Transitions in Nucleonic Matter and Neutron-Star Cooling
• Pair condensation and bound states in fermionic systems
• Phases of asymmetric nuclear matter with broken space symmetries
• Collective modes of the order parameter in a triplet superfluid neutron liquid
• The low lying modes of triplet-condensed neutron matter and their effective theory
• Neutrino emissivity of anisotropic neutron superfluids
• Superfluid phases of triplet pairing and neutrino emission from neutron stars
• Superfluid nucleon matter in and out of equilibrium and weak interactions
• Three-nucleon forces and superfluidity in neutron matter
• The entrainment matrix of a superfluid nucleon mixture at finite temperatures
• Nonlinear approach to the entrainment matrix of superfluid nucleon mixture at zero temperature
• Symmetry of the Neutron and Proton Superfluidity Effects in Cooling Neutron Stars
• Strongly correlated Fermi systems as a new state of matter
• Response functions of cold neutron matter: density, spin and current fluctuations
• ${}^1{S}_0$ pairing for neutrons in dense neutron matter induced by a soft pion