{
  "annotation_id": "63c8612c-7897-44ec-be6b-a8d4b9417b78",
  "date_created": "2026-03-02T18:00:18.599000Z",
  "date_modified": "2026-03-02T18:00:18.599000Z",
  "file_hash": "242006fb61e361d94284280f7187416ea7e274caa4e951240da5600bfc24bf59",
  "private": false,
  "record": {
    "abstract": "We analyze virtual Compton scattering off the nucleon at low energies in a\ncovariant, model-independent formalism.\n  We define a set of invariant functions which, once the irregular nucleon pole\nterms have been subtracted in a gauge-invariant fashion, is free of poles and\nkinematical zeros.\n  The covariant treatment naturally allows one to implement the constraints due\nto Lorentz and gauge invariance, crossing symmetry, and the discrete\nsymmetries.\n  In particular, when applied to the $ep\\to e\u0027p\u0027\\gamma$ reaction,\ncharge-conjugation symmetry in combination with nucleon crossing generates four\nrelations among the ten originally proposed generalized polarizabilities of the\nnucleon.",
    "arxiv_id": "nucl-th/9704064",
    "authors": [
      "D. Drechsel",
      "G. Knoechlein",
      "A. Yu. Korchin",
      "A. Metz",
      "S. Scherer"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1103/PhysRevC.57.941",
    "journal_ref": "Phys.Rev.C57:941-952,1998",
    "title": "Structure analysis of the virtual Compton scattering amplitude at low   energies",
    "url": "https://arxiv.org/abs/nucl-th/9704064"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "77bc5ef3-1fb8-49bf-b1ac-646603a6190c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}