{
  "annotation_id": "f820e48b-2e52-40fe-ab9c-8c27912f4898",
  "date_created": "2026-03-02T18:00:18.471000Z",
  "date_modified": "2026-03-02T18:00:18.471000Z",
  "file_hash": "e341ba10458081e28fd0ab5d9ef6c7198290e4b3cec7aae20373dedcf5f77516",
  "private": false,
  "record": {
    "abstract": "We put forward a formalism to calculate the relativistic particle - hole and\ndelta - hole excitation polarization insertion for pion propagator by using the\nparticle - hole - antiparticle representation of nucleon and delta propagators\nin nuclear matter. The real and the imaginary part of the polarization\ninsertion and the dispersion relation for pion propagator are calculated\nnumerically. We find that the short range correlation enhances the delta - hole\nexcitation but suppresses the particle - hole excitation, it also suppresses\nthe pion condensation. We find that the effect of the short range correlation\non the pion dispersion relation depends very much on the form of the short\nrange correlation and the parameters involved.",
    "arxiv_id": "nucl-th/9709019",
    "authors": [
      "Liang-gang Liu",
      "Masahiro Nakano"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0375-9474(97)00026-2",
    "journal_ref": "Nucl.Phys. A618 (1997) 337-348",
    "title": "The dispersion relation of pion in nuclear matter",
    "url": "https://arxiv.org/abs/nucl-th/9709019"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a4879706-f581-422c-a70c-bd19f96430ff",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}