dorsal/arxiv
View SchemaEntrainment parameters in cold superfluid neutron star core
| Authors | Nicolas Chamel, Pawel Haensel |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0603018 |
| URL | https://arxiv.org/abs/nucl-th/0603018 |
| DOI | 10.1103/PhysRevC.73.045802 |
| Journal | Phys.Rev.C73:045802,2006 |
Abstract
Hydrodynamical simulations of neutron star cores, based on a two fluid description in terms of a neutron-proton superfluid mixture, require the knowledge of the Andreev-Bashkin entrainment matrix which relates the momentum of one constituent to the currents of both constituents. This matrix is derived for arbitrary nuclear asymmetry at zero temperature and in the limits of small relative currents in the framework of the energy density functional theory. The Skyrme energy density functional is considered as a particular case. General analytic formulae for the entrainment parameters and various corresponding effective masses are obtained. These formulae are applied to the liquid core of a neutron star, composed of an homogeneous plasma of nucleons, electrons and possibly muons in beta equilibrium.
{
"annotation_id": "ea90983b-e857-4b88-817d-d0ee9d9b1b3a",
"date_created": "2026-03-02T18:00:08.363000Z",
"date_modified": "2026-03-02T18:00:08.363000Z",
"file_hash": "a673057b708cc15b74518a7641262e4f46498d1390bd28145c4f2091a54e32a5",
"private": false,
"record": {
"abstract": "Hydrodynamical simulations of neutron star cores, based on a two fluid\ndescription in terms of a neutron-proton superfluid mixture, require the\nknowledge of the Andreev-Bashkin entrainment matrix which relates the momentum\nof one constituent to the currents of both constituents. This matrix is derived\nfor arbitrary nuclear asymmetry at zero temperature and in the limits of small\nrelative currents in the framework of the energy density functional theory. The\nSkyrme energy density functional is considered as a particular case. General\nanalytic formulae for the entrainment parameters and various corresponding\neffective masses are obtained. These formulae are applied to the liquid core of\na neutron star, composed of an homogeneous plasma of nucleons, electrons and\npossibly muons in beta equilibrium.",
"arxiv_id": "nucl-th/0603018",
"authors": [
"Nicolas Chamel",
"Pawel Haensel"
],
"categories": [
"nucl-th",
"astro-ph"
],
"doi": "10.1103/PhysRevC.73.045802",
"journal_ref": "Phys.Rev.C73:045802,2006",
"title": "Entrainment parameters in cold superfluid neutron star core",
"url": "https://arxiv.org/abs/nucl-th/0603018"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "60e94b3b-e34c-4586-92cb-4d6cc9ac278e",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}