{
  "annotation_id": "a9c04e67-05fa-4367-87cd-c7086c50a5de",
  "date_created": "2026-03-02T18:02:38.125000Z",
  "date_modified": "2026-03-02T18:02:38.125000Z",
  "file_hash": "fbe4801c36e1180ec56c5f0210f068598206e4ff5763483b43ae93eee6a91466",
  "private": false,
  "record": {
    "abstract": "We show that the rate of increase of von Neumann entropy computed from the\nreduced density matrix of an open quantum system is an excellent indicator of\nthe dynamical behavior of its classical hamiltonian counterpart. In decohering\nquantum analogs of systems which exhibit classical hamiltonian chaos entropy\nproduction rate quickly tends to a constant which is given by the sum of the\npositive Lyapunov exponents, and falls off only as the system approaches\nequilibrium. By contrast, integrable systems tend to have entropy production\nrate which decreases as $t^{-1}$ well before equilibrium is attained. Thus,\nbehavior of quantum systems in contact with the environment can be used as a\ntest to determine the nature of their hamiltonian evolution.",
    "arxiv_id": "quant-ph/9502029",
    "authors": [
      "W. H. Zurek",
      "J. P. Paz"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/0167-2789(94)00271-Q",
    "title": "Quantum chaos: a decoherent definition.",
    "url": "https://arxiv.org/abs/quant-ph/9502029"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "607cd7db-b59a-4492-afe4-1c7d33351808",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}