{
  "annotation_id": "90f15d11-951a-4147-9a3e-bba1e1d18f01",
  "date_created": "2026-03-02T18:01:56.628000Z",
  "date_modified": "2026-03-02T18:01:56.628000Z",
  "file_hash": "fe71f085b3fd809b66b1d74352bfd027aec4508b7cd8edbd49c6db6850cac01f",
  "private": false,
  "record": {
    "abstract": "We discuss the notion of quantum mechanical coherence in its connection with\ntime evolution and stationarity. The transition from coherence to decoherence\nis examined in terms of an equation for the time dependence of the density\nmatrix. It is explained how the decoherence rate parameter arising in this\ndescription is related to the ``unitarity defect\u0027\u0027 in interactions with the\nenvironment as well as the growth in entropy of the system. Applications to the\n``Zeno-Watched Pot Effect\u0027\u0027 and gravitational interactions are given. Finally,\nsome recent results on applications to macroscopic coherence with the rf SQUID,\nwhere the transition from quantum to classical behavior could be studied\nexperimentally, are shown.",
    "arxiv_id": "quant-ph/0303024",
    "authors": [
      "L. Stodolsky"
    ],
    "categories": [
      "quant-ph",
      "cond-mat",
      "gr-qc"
    ],
    "journal_ref": "Time and Matter, I. Bigi and M. Faessler, eds., World Scientific,\n  2006",
    "title": "Coherence and the Clock",
    "url": "https://arxiv.org/abs/quant-ph/0303024"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "40802c09-a54c-4907-b836-a3484df87904",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}