dorsal/arxiv
View SchemaS-wave Pairing of $\Lambda$ Hyperons in Dense Matter
| Authors | Shmuel Balberg, Nir Barnea |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9709013 |
| URL | https://arxiv.org/abs/nucl-th/9709013 |
| DOI | 10.1103/PhysRevC.57.409 |
| Journal | Phys.Rev.C57:409-416,1998 |
Abstract
In this work we calculate the $^1S_0$ gap energies of $\Lambda$ hyperons in neutron star matter. The calculation is based on a solution of the BCS gap equation for an effective G-matrix parameterization of the $\Lambda-\Lambda$ interaction with a nuclear matter background, presented recently by Lanskoy and Yamamoto. We find that a gap energy of a few tenths of MeV is expected for $\Lambda$ Fermi momenta up to about 1.3 fm$^{-1}$. Implications for neutron star matter are examined, and suggest the existence of a $\Lambda$ $^1S_0$ superfluid between the threshold baryon density for $\Lambda$ formation and the baryon density where the $\Lambda$ fraction reaches $15-20%$.
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"abstract": "In this work we calculate the $^1S_0$ gap energies of $\\Lambda$ hyperons in\nneutron star matter. The calculation is based on a solution of the BCS gap\nequation for an effective G-matrix parameterization of the $\\Lambda-\\Lambda$\ninteraction with a nuclear matter background, presented recently by Lanskoy and\nYamamoto. We find that a gap energy of a few tenths of MeV is expected for\n$\\Lambda$ Fermi momenta up to about 1.3 fm$^{-1}$. Implications for neutron\nstar matter are examined, and suggest the existence of a $\\Lambda$ $^1S_0$\nsuperfluid between the threshold baryon density for $\\Lambda$ formation and the\nbaryon density where the $\\Lambda$ fraction reaches $15-20%$.",
"arxiv_id": "nucl-th/9709013",
"authors": [
"Shmuel Balberg",
"Nir Barnea"
],
"categories": [
"nucl-th",
"astro-ph"
],
"doi": "10.1103/PhysRevC.57.409",
"journal_ref": "Phys.Rev.C57:409-416,1998",
"title": "S-wave Pairing of $\\Lambda$ Hyperons in Dense Matter",
"url": "https://arxiv.org/abs/nucl-th/9709013"
},
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