{
  "annotation_id": "5e8eed2c-7b0d-48ab-aabf-3e075ad4e0dc",
  "date_created": "2026-03-02T18:02:45.198000Z",
  "date_modified": "2026-03-02T18:02:45.198000Z",
  "file_hash": "d1bcaa5bc294586b691a1c0139713782e6047abfd86d39e339d01caef522e2e6",
  "private": false,
  "record": {
    "abstract": "It is an easily deduced fact that any four-component spin 1/2 state for a\nmassive particle is a linear combination of pairs of two-component simultaneous\nrotation eigenstates, where `simultaneous\u0027 means the eigenspinors of a given\npair share the same eigenvalue. The new work here constructs the reverse: Given\npairs of simultaneous rotation eigenvectors, the properties of these pairs\ncontains relationships that are equivalent to spin 1/2 single particle\nequations. Thus the needed aspects of space-time symmetry can be produced as\nspecial cases of more general properties already present in the rotation group.\nThe exercise exploits the flexibility of the rotation group in three dimensions\nto deduce relativistic quantities in four dimensions.",
    "arxiv_id": "quant-ph/9903093",
    "authors": [
      "Richard Shurtleff"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Rotation Eigenvectors and Spin 1/2",
    "url": "https://arxiv.org/abs/quant-ph/9903093"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "eda2bca8-909a-48a1-b7ed-46156cc6fb14",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}