{
  "annotation_id": "52489930-bbee-4164-9272-bea42c442935",
  "date_created": "2026-03-02T18:00:18.339000Z",
  "date_modified": "2026-03-02T18:00:18.339000Z",
  "file_hash": "df3f1918c77caaa8f6f936fb92c39e14e271bd20229c630d33332b105e266d5c",
  "private": false,
  "record": {
    "abstract": "We compute the vacuum polarisation correction to the binding energy of\nnuclear matter in the Walecka model using a nonperturbative approach. We first\nstudy such a contribution as arising from a ground state structure with\nbaryon-antibaryon condensates. This yields the same results as obtained through\nthe relativistic Hartree approximation of summing tadpole diagrams for the\nbaryon propagator. Such a vacuum is then generalized to include quantum effects\nfrom meson fields through scalar-meson condensates. The method is applied to\nstudy properties of nuclear matter and leads to a softer equation of state\ngiving a lower value of the incompressibility than would be reached without\nquantum effects. The density dependent effective sigma mass is also calculated\nincluding such vacuum polarisation effects.",
    "arxiv_id": "nucl-th/9702008",
    "authors": [
      "A. Mishra",
      "P. K. Panda",
      "S. Schramm",
      "J. Reinhardt",
      "W. Greiner"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1103/PhysRevC.56.1380",
    "journal_ref": "Phys.Rev.C56:1380-1388,1997",
    "title": "Structure of the Vacuum in Nuclear Matter - A Nonperturbative Approach",
    "url": "https://arxiv.org/abs/nucl-th/9702008"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5082b46b-aef1-4355-bb80-77a15aca47da",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}