{
  "annotation_id": "c269b27c-18cd-4006-b1c1-f6d772e82dad",
  "date_created": "2026-03-02T18:02:41.298000Z",
  "date_modified": "2026-03-02T18:02:41.298000Z",
  "file_hash": "9199eb338820ca4de6940b633202653532e1a44bdf22a8bb3f051da5af966f36",
  "private": false,
  "record": {
    "abstract": "The quantum measurement problem is formulated in the form of an insolubility\ntheorem that states the impossibility of obtaining, for all available object\npreparations, a mixture of states of the compound object and apparatus system\nthat would represent definite pointer positions. A proof is given that\ncomprises arbitrary object observables, whether sharp or unsharp, and besides\nsharp pointer observables a certain class of unsharp pointers, namely, those\nallowing for the property of pointer value definiteness. A recent result of H.\nStein is applied to allow for the possibility that a given measurement may not\nbe applicable to all possible object states but only to a subset of them. The\nquestion is raised whether the statement of the insolubility theorem remains\ntrue for genuinely unsharp observables. This gives rise to a precise notion of\nunsharp objectification.",
    "arxiv_id": "quant-ph/9802011",
    "authors": [
      "P. Busch"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "Int.J.Theor.Phys. 37 (1998) 241-247",
    "title": "Can `unsharp objectification\u0027 solve the quantum measurement problem?",
    "url": "https://arxiv.org/abs/quant-ph/9802011"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "97b20eba-fc64-405f-b959-aa7036adb939",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}