dorsal/arxiv
View SchemaNuclear pairing from chiral pion-nucleon dynamics
| Authors | N. Kaiser, T. Niksic, D. Vretenar |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0411038 |
| URL | https://arxiv.org/abs/nucl-th/0411038 |
| DOI | 10.1140/epja/i2005-10122-3 |
| Journal | Eur.Phys.J. A25 (2005) 257-261 |
Abstract
We use a recently improved version of the chiral nucleon-nucleon potential at next-to-next-to-leading order to calculate the $^1S_0$ pairing gap in isospin-symmetric nuclear matter. The pairing potential consists of the long-range one- and two-pion exchange terms and two short-distance NN-contact couplings. We find that the inclusion of the two-pion exchange at next-to-next-to-leading order reduces substantially the cut-off dependence of the $^1S_0$ pairing gap determined by solving a regularised BCS equation. Our results are close to those obtained with the universal low-momentum nucleon-nucleon potential $V_{\rm low-k}$ or the phenomenological Gogny D1S force.
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"abstract": "We use a recently improved version of the chiral nucleon-nucleon potential at\nnext-to-next-to-leading order to calculate the $^1S_0$ pairing gap in\nisospin-symmetric nuclear matter. The pairing potential consists of the\nlong-range one- and two-pion exchange terms and two short-distance NN-contact\ncouplings. We find that the inclusion of the two-pion exchange at\nnext-to-next-to-leading order reduces substantially the cut-off dependence of\nthe $^1S_0$ pairing gap determined by solving a regularised BCS equation. Our\nresults are close to those obtained with the universal low-momentum\nnucleon-nucleon potential $V_{\\rm low-k}$ or the phenomenological Gogny D1S\nforce.",
"arxiv_id": "nucl-th/0411038",
"authors": [
"N. Kaiser",
"T. Niksic",
"D. Vretenar"
],
"categories": [
"nucl-th"
],
"doi": "10.1140/epja/i2005-10122-3",
"journal_ref": "Eur.Phys.J. A25 (2005) 257-261",
"title": "Nuclear pairing from chiral pion-nucleon dynamics",
"url": "https://arxiv.org/abs/nucl-th/0411038"
},
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