{
  "annotation_id": "a96c124e-8e25-4915-849a-3895d4bdd690",
  "date_created": "2026-03-02T18:01:48.891000Z",
  "date_modified": "2026-03-02T18:01:48.891000Z",
  "file_hash": "a3ffdc1d6a64653221b365a28a92c176c68bdaf774dd47bcf1fd14b4df7768ab",
  "private": false,
  "record": {
    "abstract": "We compare decoherence induced in a simple quantum system (qubit) for two\ndifferent initial states of the environment: canonical (fixed temperature) and\nmicrocanonical (fixed energy), for the general case of a fully interacting\noscillator environment. We find that even a relatively compact oscillator bath\n(with the effective number of degrees of freedom of order 10), initially in a\nmicrocanonical state, will typically cause decoherence almost indistinguishable\nfrom that by a macroscopic, thermal environment, except possibly at\nsingularities of the environment\u0027s specific heat (critical points). In the\nlatter case, the precise magnitude of the difference between the canonical and\nmicrocanonical results depends on the critical behavior of the dissipative\ncoefficient, characterizing the interaction of the qubit with the environment.",
    "arxiv_id": "quant-ph/0202125",
    "authors": [
      "S. Khlebnikov",
      "G. Sadiek"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.66.032312",
    "journal_ref": "Phys. Rev. A 66, 032312 (2002)",
    "title": "Decoherence by a nonlinear environment: canonical vs. microcanonical   case",
    "url": "https://arxiv.org/abs/quant-ph/0202125"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "74e8ee89-3e58-4ece-a419-7790fc68d190",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}