{
  "annotation_id": "acf8963c-9c1c-48b4-a23f-ac8c5fa73a50",
  "date_created": "2026-03-02T18:01:52.493000Z",
  "date_modified": "2026-03-02T18:01:52.493000Z",
  "file_hash": "d777df38f1543e5d955a7931bdc0a86f048ca2e9f84035b1e348fe3f8f0d7c7b",
  "private": false,
  "record": {
    "abstract": "In previous papers quant-ph/0206077, quant-ph/0206078, quant-ph/0206079 we\nhave shown that there exist three types of the relativistic equations for the\nmassless particles. Here we show that for the free particles and antiparticles\nwith the mass m\u003e0 and the arbitrary spin $s \\geq 1/2$ there also exist three\ntypes of nonequivalent equations.",
    "arxiv_id": "quant-ph/0206104",
    "authors": [
      "Wilhelm I. Fushchych"
    ],
    "categories": [
      "quant-ph",
      "math-ph",
      "math.MP",
      "nlin.SI"
    ],
    "journal_ref": "Lettere al Nuovo Cimento, 1972, V. 4, N 9, P. 344-346",
    "title": "On the three types of relativistic equations for particles with nonzero   mass",
    "url": "https://arxiv.org/abs/quant-ph/0206104"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "75223224-d092-4fda-a2e7-16afe0dbae1c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}