{
  "annotation_id": "e5cf04f0-ee78-4ae1-b06f-8bcdc9f6a612",
  "date_created": "2026-03-02T18:00:15.461000Z",
  "date_modified": "2026-03-02T18:00:15.461000Z",
  "file_hash": "83b2d3eed1491f4b4b3cd847a61fafd298d0e00fcfdd1de43edb3e2392a9e0c4",
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  "record": {
    "abstract": "For a relativistic particle moving in the presence of mean scalar and vector\nfields, the energy at second order in the scalar field is shown to contain two\ncontributions in general. One is a momentum-dependent repulsive interaction\nsatisfying a low-energy theorem pointed out by Wallace, Gross and Tjon. The\nother does not vanish at zero-momentum and involves a ``polarisability\" of the\nparticle by the scalar field. The first of these contributions is independent\nof the details of the structure of the particle and the couplings of its\nconstituents to the external fields. The appearance of such a piece in the\ncentral nucleon-nucleus potential thus would support the existence of strong\nscalar fields in nuclei, without requiring the use of a Dirac equation for the\nnucleon.",
    "arxiv_id": "nucl-th/9412001",
    "authors": [
      "Michael C. Birse"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.51.1083",
    "journal_ref": "Phys.Rev.C51:1083-1085,1995",
    "title": "Low-energy theorem for a composite particle in mean scalar and vector   fields",
    "url": "https://arxiv.org/abs/nucl-th/9412001"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7e4dff32-8317-4e5f-8c6a-98dcac1068cd",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}