{
  "annotation_id": "3fd89648-7b68-453b-9b99-bcf171b8f5d7",
  "date_created": "2026-03-02T18:00:36.282000Z",
  "date_modified": "2026-03-02T18:00:36.282000Z",
  "file_hash": "f645b4219c51afe84648f2135ebe54a6152ce61daa3fa735c285455dfa9c1f16",
  "private": false,
  "record": {
    "abstract": "The use of generalized Lagrangians for describing elementary particles was\nalready claimed by Ostrogradskii. It is shown how the spin structure of\nelementary particles arises if one allows the Lagrangian to depend on higher\norder derivatives. One part is related to the rotation of the particle and the\nother, which is coming from the dependence of the Lagrangian on the\nacceleration, is known as the zitterbewegung part of spin.",
    "arxiv_id": "physics/0106023",
    "authors": [
      "Martin Rivas"
    ],
    "categories": [
      "physics.class-ph",
      "physics.gen-ph"
    ],
    "title": "Generalized Lagrangians and spinning particles",
    "url": "https://arxiv.org/abs/physics/0106023"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a01a6fa9-fed8-46d1-9dca-bf8df260c687",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}