{
  "annotation_id": "6bf6783a-ac92-401d-96f7-5a76eb199c99",
  "date_created": "2026-03-02T18:02:20.423000Z",
  "date_modified": "2026-03-02T18:02:20.423000Z",
  "file_hash": "478646bc6be166ef594066612911bbdd81f10b725855104c979d8fdb7a67f708",
  "private": false,
  "record": {
    "abstract": "The discussion on time-reversal in quantum mechanics exists at least since\nWigner\u0027s ``Uber die Operation der Zeitumkehr in der Quantenmechanik\u0027\u0027 paper in\n1932. If and how the dynamics of the quantum world is time-reversible has been\nthe subject of many controversies. Some have seen quantum mechanics as\nfundamentally time-irreversible, see for example von Neumann, and some have\nseen in that the ultimate cause of time\u0027s arrow and second law behavior. In his\nbest-selling book ``The Emperor\u0027s New Mind\u0027\u0027, Roger Penrose argues similarly\nand concludes that ``our sought-for quantum gravity must be a time-asymmetric\ntheory\u0027\u0027 [p.351]. Not so long ago, we read yet about another project in\nPhysicalia 26: to extend quantum mechanics into new fundamentally irreversible\nequations, thus proposing a new theory giving ``... une description\nfondamentale irreversible de tout systeme physique\u0027\u0027.",
    "arxiv_id": "quant-ph/0508041",
    "authors": [
      "Tim Jacobs",
      "Christian Maes"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "Physicalia Mag. 27 (2005), 119-130",
    "title": "Reversibility and Irreversibility within the Quantum Formalism",
    "url": "https://arxiv.org/abs/quant-ph/0508041"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "773ffb2f-8b51-4326-b14f-d277f0c173cb",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}