dorsal/arxiv
View Schema^{1}S_{0} proton superfluidity in neutron star matter: Impact of bulk properties
| Authors | Tomonori Tanigawa, Masayuki Matsuzaki, Satoshi Chiba |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0412011 |
| URL | https://arxiv.org/abs/nucl-th/0412011 |
| DOI | 10.1103/PhysRevC.70.065801 |
| Journal | Phys.Rev. C70 (2004) 065801 |
Abstract
We study the ^{1}S_{0} proton pairing gap in neutron star matter putting emphasis on influence of the Dirac effective mass and the proton fraction on the gap within the relativistic Hartree-Bogoliubov model. The gap equation is solved using the Bonn-B potential as a particle-particle channel interaction. It is found that the maximal pairing gap \Delta_{max} is 1-2 MeV, which has a strong correlation with the Dirac effective mass. Hence we suggest that it serves as a guide to narrow down parameter sets of the relativistic effective field theory. Furthermore, the more slowly protons increase with density in the core region of neutron stars, the wider the superfluid range and the slightly lower the peak of the gap become.
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"abstract": "We study the ^{1}S_{0} proton pairing gap in neutron star matter putting\nemphasis on influence of the Dirac effective mass and the proton fraction on\nthe gap within the relativistic Hartree-Bogoliubov model. The gap equation is\nsolved using the Bonn-B potential as a particle-particle channel interaction.\nIt is found that the maximal pairing gap \\Delta_{max} is 1-2 MeV, which has a\nstrong correlation with the Dirac effective mass. Hence we suggest that it\nserves as a guide to narrow down parameter sets of the relativistic effective\nfield theory. Furthermore, the more slowly protons increase with density in the\ncore region of neutron stars, the wider the superfluid range and the slightly\nlower the peak of the gap become.",
"arxiv_id": "nucl-th/0412011",
"authors": [
"Tomonori Tanigawa",
"Masayuki Matsuzaki",
"Satoshi Chiba"
],
"categories": [
"nucl-th",
"astro-ph"
],
"doi": "10.1103/PhysRevC.70.065801",
"journal_ref": "Phys.Rev. C70 (2004) 065801",
"title": "^{1}S_{0} proton superfluidity in neutron star matter: Impact of bulk properties",
"url": "https://arxiv.org/abs/nucl-th/0412011"
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