{
  "annotation_id": "f351a9c1-0ed3-4757-8d17-6ee7adf56741",
  "date_created": "2026-03-02T18:02:41.366000Z",
  "date_modified": "2026-03-02T18:02:41.366000Z",
  "file_hash": "6c026992cdb078ba31203c45020116a5f5602334c5c1e637652a3702216cb0d5",
  "private": false,
  "record": {
    "abstract": "We study information measures in quantu mechanics, with particular emphasis\non providing a quantification of the notions of classicality and\npredictability. Our primary tool is the Shannon - Wehrl entropy I. We give a\nprecise criterion for phase space classicality and argue that in view of this\na) I provides a measure of the degree of deviation from classicality for closed\nsystem b) I - S (S the von Neumann entropy) plays the same role in open systems\nWe examine particular examples in non-relativistic quantum mechanics. Finally,\n(this being one of our main motivations) we comment on field classicalisation\non early universe cosmology.",
    "arxiv_id": "quant-ph/9805055",
    "authors": [
      "C. Anastopoulos"
    ],
    "categories": [
      "quant-ph",
      "gr-qc"
    ],
    "doi": "10.1103/PhysRevD.59.045001",
    "journal_ref": "Phys.Rev. D59 (1999) 045001",
    "title": "Information measures and classicality in quantum mechanics",
    "url": "https://arxiv.org/abs/quant-ph/9805055"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c8c2dd32-c2f0-498f-b338-c310d787e2a8",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}