{
  "annotation_id": "857c3d2a-39c0-4703-8fd4-a3db641416a8",
  "date_created": "2026-03-02T18:02:30.920000Z",
  "date_modified": "2026-03-02T18:02:30.920000Z",
  "file_hash": "a66cfc99bc49612a11add00b41f388ba64ce5f5f2c9db9666dd16fc03d112503",
  "private": false,
  "record": {
    "abstract": "Relativistic free-motion time-of-arrival theory for massive spin-1/2\nparticles is systematically developed. Contrary to the nonrelativistic\ntime-of-arrival operator studied thoroughly in previous literatures, the\nrelativistic time-of-arrival operator possesses self-adjoint extensions because\nof the particle-antiparticle symmetry. The nonrelativistic limit of our theory\nis in agreement with the nonrelativistic time-of-arrival theory.",
    "arxiv_id": "quant-ph/0608031",
    "authors": [
      "Zhi-Yong Wang",
      "Cai-Dong Xiong"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1751-8113/40/8/014",
    "journal_ref": "J. Phys. A: Math. Theor. 40 (2007) 1897-1905",
    "title": "Arrival Time in Relativistic Quantum Mechanics",
    "url": "https://arxiv.org/abs/quant-ph/0608031"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9549577b-62e9-4e5b-b4a5-f809f0d05a4c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}