{
  "annotation_id": "b8266656-3551-4e8a-b3f7-435ae2b72494",
  "date_created": "2026-03-02T18:00:18.521000Z",
  "date_modified": "2026-03-02T18:00:18.521000Z",
  "file_hash": "238c7cd8192da1999fdd76eb0045725da0962a1f06d26c54b327f0dd9ef983f5",
  "private": false,
  "record": {
    "abstract": "A meson exchange model of the $\\pi\\pi$ interaction which fits free $\\pi\\pi$\nscattering data is used to calculate the interactions of pions in nuclear\nmatter as a function of nuclear density. Polarization of the nuclear medium by\nthe pions results in a marked increase in the s-wave $\\pi\\pi$ attraction at low\nenergy. The influence of this effect on the nucleon-nucleon interaction is a\ncorresponding increase with density of the $NN$ central potential due to the\nexchange of two correlated pions, resulting in an $NN$ interaction which fails\nto saturate. A possible mechanism for restoring the theoretical stability of\nnuclear matter is explored and found to be effective.",
    "arxiv_id": "nucl-th/9611019",
    "authors": [
      "R. Rapp",
      "J. W. Durso",
      "J. Wambach"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0375-9474(96)00482-4",
    "journal_ref": "Nucl.Phys. A615 (1997) 501-515",
    "title": "The Two-Pion Exchange NN-Potential in Nuclear Matter and Nuclear   Stability",
    "url": "https://arxiv.org/abs/nucl-th/9611019"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "691063ba-08b7-4e1c-b973-635d9b459a0e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}