{
  "annotation_id": "1a73754c-5f00-4a57-ad3c-1188270830b7",
  "date_created": "2026-03-02T18:00:22.345000Z",
  "date_modified": "2026-03-02T18:00:22.345000Z",
  "file_hash": "a27c838b82a10ec44408314b3e07722c27f648645ec1c98782c5a9de939e0136",
  "private": false,
  "record": {
    "abstract": "The propagation of the scalar ($\\sigma$) and vector ($\\omega$) mesons in\nnuclear matter is studied in detail using the Walecka model over a wide range\nof densities and including the effects of a finite $\\sigma$ width through the\ninclusion of a two-pion loop. We calculate the dispersion relation and spectral\nfunctions of the $\\sigma$ and (transverse and longitudinal) $\\omega$ mesons,\nincluding the effect of $\\sigma$-$\\omega$ mixing in matter. It is shown that\nthe mixing effect is quite important in the propagation of the (longitudinal)\n$\\omega$ and $\\sigma$ mesons above normal nuclear matter density. We find that\nthere is a two-peak structure in the spectral function of the $\\sigma$ channel,\ncaused by $\\sigma$-$\\omega$ mixing.",
    "arxiv_id": "nucl-th/9804015",
    "authors": [
      "K. Saito",
      "K. Tsushima",
      "AW Thomas",
      "AG Williams"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1016/S0370-2693(98)00702-3",
    "journal_ref": "Phys.Lett.B433:243-249,1998",
    "title": "Sigma and omega meson propagation in a dense nuclear medium",
    "url": "https://arxiv.org/abs/nucl-th/9804015"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b55b2ab3-f046-44ea-a641-f0641698dce0",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}