Magnetic Properties of Quantized Vortices in Neutron \(^3P_2\) Superfluids in Neutron Stars

We discuss quantized vortices in neutron \(^3P_2\) superfluids, which are believed to realize in high density neutron matter such as neutron stars. By using the Ginzburg-Landau free energy for \(^3P_2\) superfluids, we determine the ground state in the absence and presence of the external magnetic f...

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Bibliographic Details
Published inarXiv.org
Main Authors Masuda, Kota, Nitta, Muneto
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 07.12.2015
Subjects
Free energy
Magnetic fields
Magnetic properties
Neutron stars
Neutrons
Superfluidity
Vortices
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Summary:We discuss quantized vortices in neutron \(^3P_2\) superfluids, which are believed to realize in high density neutron matter such as neutron stars. By using the Ginzburg-Landau free energy for \(^3P_2\) superfluids, we determine the ground state in the absence and presence of the external magnetic field, and numerically construct \(^3P_2\) quantized vortices in the absence and presence of the external magnetic field along the vortex axis (poloidal) or angular direction (toroidal). We find in certain situations the spontaneous magnetization of the vortex core, whose typical magnitude is about \(10^{7-8}\) Gauss, but the net magnetic field in a neutron star is negligible because of the ratio of the vortex core size \(\sim 10\)fm and the intervortex distance \(\sim 10^{-6}\)m in a vortex lattice.
ISSN:2331-8422
DOI:10.48550/arxiv.1512.01946