Triplet superfluidity in neutron matter with Skyrme forces at subnuclear and supranuclear densities in a strong magnetic field

• Authors: Alexander Tarasov
• Languages of publication: EN

Abstracts

EN

Within a generalized non-relativistic Fermi-liquid approach we have found general analytical formulae for phase-transition temperatures T
c,1(n, H) and T
c,2(n, H) (which are nonlinear functions of density, n, and linear of magnetic field, H) for phase transitions in spatially uniform, dense, pure neutron matter from normal to superfluid states with spin-triplet p-wave pairing (similar to anisotropic superfluid phases 3He - A1 and 3He - A2) in steady and homogeneous sufficiently strong magnetic field (but |µn|H ≪ E
c < ɛ
F(n), where µn is the magnetic dipole moment of a neutron, E
c is the cutoff energy and ɛ
F(n)is the Fermi energy in neutron matter). General formulae for T
c,1,2(n,H) are valid for arbitrary parameterization of the effective Skyrme forces in neutron matter. We have used for definiteness the so-called SLy2, Gs and RATP parameterizations of the Skyrme forces with different exponents in their power dependence on density n (at sub- and supranuclear densities) from the interval 0.7 n
0 ≲ n < n
c(Skyrme)< 2 n
0, where n
0 =0.17 fm−3 is the nuclear density and n
c(Skyrme)is the the critical density of the ferromagnetic instability in superfluid neutron matter. These phase transitions might exist in the liquid outer core of magnetized neutron stars.

Keywords

EN

superfluid Fermi liquid; spin-triplet pairing; neutron matter; Skyrme interaction

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2011
• Volume: 9
• Issue: 4
• Pages: 1057-1076

Dates

published

1 - 8 - 2011

online

30 - 4 - 2011

Contributors

author

Alexander Tarasov

• Akhiezer Institute for Theoretical Physics, NSC “Kharkov Institute of Physics and Technology”, Akademicheskaya str. 1, 61108, Kharkov, Ukraine

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Identifiers

DOI

10.2478/s11534-010-0089-6