{
  "annotation_id": "78190941-ed88-4d42-8c57-d30ace1e9e38",
  "date_created": "2026-03-02T18:02:37.807000Z",
  "date_modified": "2026-03-02T18:02:37.807000Z",
  "file_hash": "681097ab86b542a07631ad5d7e376525b957e98f12cefec353b33e0d52efc96a",
  "private": false,
  "record": {
    "abstract": "The EPRB experiment with massive partcles can be formulated if one defines\nspin in a relativistic way. Two versions are discussed: The one using the spin\noperator defined via the relativistic center-of-mass operator, and the one\nusing the Pauli-Lubanski vector. Both are shown to lead to the SAME prediction\nfor the EPRB experiment: The degree of violation of the Bell inequality\nDECREASES with growing velocity of the EPR pair of spin-1/2 particles. The\nphenomenon can be physically understood as a combined effect of the Lorentz\ncontraction and the Moller shift of the relativistic center of mass. The effect\nis therefore stronger than standard relativistic phenomena such as the Lorentz\ncontraction or time dilatation. The fact that the Bell inequality is in general\nless violated than in the nonrelativistic case will have to be taken into\naccount in tests for eavesdropping if massive particles will be used for a key\ntransfer.",
    "arxiv_id": "quant-ph/9609022",
    "authors": [
      "Marek Czachor"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.55.72",
    "journal_ref": "Phys.Rev. A55 (1997) 72",
    "title": "Einstein-Podolsky-Rosen-Bohm experiment with relativistic massive   particles",
    "url": "https://arxiv.org/abs/quant-ph/9609022"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b369e991-1885-4ae5-b448-a856ee10b8df",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}