{
  "annotation_id": "01e13f21-95e6-432b-a199-deca6da7aa69",
  "date_created": "2026-03-02T18:00:04.609000Z",
  "date_modified": "2026-03-02T18:00:04.609000Z",
  "file_hash": "ceafe05ffcccb40e6a61c997a9a6c2e8b65ec21c9cee77299ea0783f8a4d2805",
  "private": false,
  "record": {
    "abstract": "We generalize the linear sigma model in order to develop a chiral-invariant\nmodel of nuclear structure. The model is natural, and contains not only the\nusual sigma meson which is the chiral partner of the pion but also a new\nchiral-singlet that is responsible for the medium-range nucleon-nucleon\nattraction. This approach provides significant advantages in terms of its\ndescription of nuclear matter and finite nuclei in comparison with conventional\nmodels based on the linear sigma model.",
    "arxiv_id": "nucl-th/0503022",
    "authors": [
      "K. Saito",
      "H. Kouno",
      "K. Tsushima",
      "A. W. Thomas"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1140/epja/i2005-10170-7",
    "journal_ref": "Eur.Phys.J.A26:159-165,2005",
    "title": "Two-scale scalar mesons in nuclei",
    "url": "https://arxiv.org/abs/nucl-th/0503022"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9f5fb6be-82f4-426d-873e-390dce50580b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}