{
  "annotation_id": "b3ea4c98-7ca4-4731-9810-d7baa87a1db0",
  "date_created": "2026-03-02T18:02:16.425000Z",
  "date_modified": "2026-03-02T18:02:16.425000Z",
  "file_hash": "93e2158002b854e8b161571fc69376b0e829de562233c9935fe5e17cf1cafe82",
  "private": false,
  "record": {
    "abstract": "The measurement process in quantum mechanics is usually described by the von\nNeumann projection postulate, which forms a basic constituent of the laws of\nquantum mechanics. Since this postulate requires the outside observer of the\nsystem, it is hard to apply quantum mechanics to the whole Universe. Therefore\nwe propose that the quantum measurement process is actually a physical process\nassociated with the ubiquitous mechanism of spontaneous symmetry breaking.\nBased on this proposal, we construct a quantum measurement model in which the\nvon Neumann projection is described as the dynamical pro-coherence process.\nFurthermore, the classically distinguishable pointer parameter emerges as the\nc-number order parameter in the formalism of closed time-path quantum filed\ntheory. We also discuss the precision of the measurement and the possible\ndeduction of the Born probability postulate.",
    "arxiv_id": "quant-ph/0505077",
    "authors": [
      "Masahiro Morikawa",
      "Akika Nakamichi"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1143/PTP.116.679",
    "title": "Quantum measurement driven by spontaneous symmetry breaking",
    "url": "https://arxiv.org/abs/quant-ph/0505077"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2eaede66-fffc-4641-8e4f-8327d809b6a1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}