{
  "annotation_id": "b5dfb74d-7746-4dd7-9b37-b6f70921f346",
  "date_created": "2026-03-02T18:01:52.611000Z",
  "date_modified": "2026-03-02T18:01:52.611000Z",
  "file_hash": "7b48eee62868fcf53d0da9e943f06191178ddd0715c450a369f623cee233cbaf",
  "private": false,
  "record": {
    "abstract": "Recent experimental measurements of the time interval between detection of\nthe two photons emitted in positron/electron annihilation have indicated that\ncollapse of the spatial part of the photon\u0027s wavefunction, due to detection of\nthe other photon, does not occur. Although quantum nonlocality actually occurs\nin photons produced through parametric down-conversion, the recent experiments\ngive strong evidence against measurement-induced instantaneous\nspatial-localization of high-energy gamma photons. A new quantum-mechanical\nanalysis of the EPR problem is presented which may help to explain the observed\ndifferences between photons produced through parametric down-conversion and\nphotons produced through positron/electron annihilation. The results are found\nto concur with the recent experiments involving gamma photons.",
    "arxiv_id": "quant-ph/0209158",
    "authors": [
      "Victor D. Irby"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.67.034102",
    "journal_ref": "Phys. Rev. A 67, 034102 (2003)",
    "title": "Physical limitations on quantum nonlocality in the detection of gamma   photons emitted from positron/electron annihilation",
    "url": "https://arxiv.org/abs/quant-ph/0209158"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "26ff6fef-c736-4291-9a63-eb4f46aa8077",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}