{
  "annotation_id": "e7361fb5-e5fb-471f-8866-717ae77968ea",
  "date_created": "2026-03-02T18:02:37.383000Z",
  "date_modified": "2026-03-02T18:02:37.383000Z",
  "file_hash": "0b5c8b373c97259eac6143a4fa3d3ca79f6d12783c54b3ce622e7ed7cd5d0f88",
  "private": false,
  "record": {
    "abstract": "The nonrelativistic singlet state average $\\langle \\psi|{\\vec a}\\cdot\\vec\n\\sigma\\otimes {\\vec b}\\cdot\\vec \\sigma|\\psi\\rangle =-\\vec a\\cdot\\vec b $ can be\nrelativistically generalized if one defines spin {\\it via\\/} the relativistic\ncenter-of-mass operator. The relativistic correction is quadratic in $v/c$ and\ncan be measured in Einstein-Podolsky-Rosen-Bohm-type experiments with massive\nspin-1/2 particles. A deviation from the nonrelativistic formula would indicate\nthat for relativistic nonzero-spin particles centers of mass and charge do not\ncoincide.",
    "arxiv_id": "quant-ph/9603017",
    "authors": [
      "Marek Czachor"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Einstein-Podolsky-Rosen-Bohm experiment with massive particles as a test   of relativistic center-of-mass position operator",
    "url": "https://arxiv.org/abs/quant-ph/9603017"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0a1ca8ff-8868-44dd-b215-7f78a211bade",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}