{
  "annotation_id": "dfca971d-64d5-4f9a-9c8a-21743a9d3c13",
  "date_created": "2026-03-02T18:00:01.434000Z",
  "date_modified": "2026-03-02T18:00:01.434000Z",
  "file_hash": "d9d328a6318825744f8508881b5ce4d17f7f24d0c661eac684650046f5c43f7a",
  "private": false,
  "record": {
    "abstract": "In this work we evaluate the $^1S_0$ energy gap of $\\Sigma^-$ hyperons in\n$\\beta$-stable neutron star matter. We solve the BCS gap equation for an\neffective $\\Sigma^-\\Sigma^-$ pairing interaction derived from the most recent\nparametrization of the hyperon-hyperon interaction constructed by the Nijmegen\ngroup. We find that the $\\Sigma^-$ hyperons are in a $^1S_0$ superfluid state\nin the density region $\\sim 0.27-0.7$ fm$^{-3}$, with a maximum energy gap of\norder 8 MeV at a total baryon number density of $\\sim 0.37$ fm$^{-3}$ and a\n$\\Sigma^-$ fraction of about 8%. We examine the implications on neutron star\ncooling.",
    "arxiv_id": "nucl-th/0405010",
    "authors": [
      "Isaac Vidana",
      "Laura Tolos"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.70.028802",
    "journal_ref": "Phys.Rev. C70 (2004) 028802",
    "title": "Superfluidity of $\\Sigma^-$ hyperons in $\\beta$-stable neutron star   matter",
    "url": "https://arxiv.org/abs/nucl-th/0405010"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9105acc9-007b-46ad-b210-50d20931b6f1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}