{
  "annotation_id": "d6a65b2e-741d-4381-8474-3a013b60201b",
  "date_created": "2026-03-02T18:02:41.419000Z",
  "date_modified": "2026-03-02T18:02:41.419000Z",
  "file_hash": "c91b9d7f7607bca931865e01ce6c955e8c903b21341af3dcce623e0a423691a4",
  "private": false,
  "record": {
    "abstract": "Without addressing the measurement problem (i.e. what causes the wave\nfunction to ``collapse\u0027\u0027, or to ``branch\u0027\u0027, or a history to become realized, or\na property to actualize), I discuss the problem of the timing of the quantum\nmeasurement: assuming that in an appropriate sense a measurement happens, when\nprecisely does it happen? This question can be posed within most\ninterpretations of quantum mechanics. By introducing the operator M, which\nmeasures whether or not the quantum measurement has happened, I suggest that,\ncontrary to what is often claimed, quantum mechanics does provide a precise\nanswer to this question, although a somewhat surprising one.",
    "arxiv_id": "quant-ph/9802020",
    "authors": [
      "Carlo Rovelli"
    ],
    "categories": [
      "quant-ph",
      "gr-qc"
    ],
    "journal_ref": "Found.Phys. 28 (1998) 1031-1043",
    "title": "``Incerto tempore, incertisque loci\u0027\u0027: Can we compute the exact time at   which a quantum measurement happens?",
    "url": "https://arxiv.org/abs/quant-ph/9802020"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "94675055-2db4-463b-94d1-db53cc4a7624",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}