{
  "annotation_id": "1281bee5-a19e-47e5-9f60-179de82a1412",
  "date_created": "2026-03-02T18:02:17.214000Z",
  "date_modified": "2026-03-02T18:02:17.214000Z",
  "file_hash": "2ef33ec118780941c9688dcff6080a084f90a6d06944200075a87bd5a80e8364",
  "private": false,
  "record": {
    "abstract": "It is claimed in the above paper that, if time travel were possible, quantum\npropagation would prevent classic time travel paradoxes by establishing\nconsistent loops; an example circuit is used to demonstrate such a loop. It is\nargued here that established loops are not the framework in which the classic\nparadoxes arise; rather they arise via the establishment of a concrete initial\nhistory in which no disturbing time travel is allowed and then disturbing that\nhistory via the launch of the time traveller. It is shown that, operated in\nthis two-pass fashion, if the first forward evolution of their circuit produces\na definite triggering of a backwards time travelling state, the re-evolution\nthereby engendered may be organised so as to prohibit the triggering of this\nstate, thereby creating a classic time travel paradox.",
    "arxiv_id": "quant-ph/0507052",
    "authors": [
      "John S. Wykes"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Comment on \u0027Quantum Theory Looks at Time Travel\u0027 by D.Greenberger \u0026   K.Svozil",
    "url": "https://arxiv.org/abs/quant-ph/0507052"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f316b369-b5a7-4815-ba9b-2e60d1883ff4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}