{
  "annotation_id": "960e39eb-1c37-437e-b57f-a2dd55d0c4be",
  "date_created": "2026-03-02T18:01:49.286000Z",
  "date_modified": "2026-03-02T18:01:49.286000Z",
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  "record": {
    "abstract": "The properties of an alternative definition of quantum entropy, based on\nWigner functions, are discussed. Such definition emerges naturally from the\nWigner representation of quantum mechanics, and can easily quantify the amount\nof entanglement of a quantum state. It is shown that smoothing of the Wigner\nfunction induces an increase in entropy. This fact is used to derive some\nsimple rules to construct positive definite probability distributions which are\nalso admissible Wigner functions",
    "arxiv_id": "quant-ph/0203102",
    "authors": [
      "G. Manfredi",
      "M. R. Feix"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevE.62.4665",
    "journal_ref": "Phys. Rev E 62, 4665 (2000)",
    "title": "Entropy and Wigner Functions",
    "url": "https://arxiv.org/abs/quant-ph/0203102"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0d0eef77-b2d0-4200-a841-a052267e91e1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}