{
  "annotation_id": "5206f0c7-c0d9-402e-8e13-b5ca2b518c12",
  "date_created": "2026-03-02T17:59:57.643000Z",
  "date_modified": "2026-03-02T17:59:57.643000Z",
  "file_hash": "acb10f43362c783f6f54d0a8db4a0afb5e80f30be3303e5859502d7496e639ee",
  "private": false,
  "record": {
    "abstract": "Since the existing calculations of the effective meson mass in nuclear medium\ninvolve approximations, it is important to examine whether they satisfy the\ngeneral requirement of the equivalence theorem that the physical observables\nshould be independent of the choice of field variables. We study here\nconsequences of nucleon field transformations. As an illustrative case we\nconsider the in-medium effective pion mass calculated for the s-wave\npion-nucleon interaction in the linear density approximation. We demonstrate\nthat it is necessary to include the Born term explicitly in order that the\neffective pion mass should obey the equivalence theorem.",
    "arxiv_id": "nucl-th/0303066",
    "authors": [
      "S. Kondratyuk",
      "K. Kubodera",
      "F. Myhrer"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.68.044001",
    "journal_ref": "Phys.Rev. C68 (2003) 044001",
    "title": "In-medium meson properties and field transformations",
    "url": "https://arxiv.org/abs/nucl-th/0303066"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "56d69dfa-e8c1-4bc8-b968-f5edf8ed3ec7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}