{
  "annotation_id": "97620227-5e54-4f32-ad0b-a675671cce88",
  "date_created": "2026-03-02T18:02:37.885000Z",
  "date_modified": "2026-03-02T18:02:37.885000Z",
  "file_hash": "9d0d959ebc433de1e822b1b47715c13828ae9bf7c132a645875285f2ca4b35c5",
  "private": false,
  "record": {
    "abstract": "The quantum Langevin equation is derived from the Feynman-Veron\nforward--backward path integral representation for a density matrix of a\nquantum system in a thermal oscillator bath. We exhibit the mechanism by which\nthe classical, $c$-valued noise in the Feynman-Vernon theory turns into an\noperator-valued quantum noise fulfilling characteristic commutation relation\nnecessary for the unitarity of the time evolution in the quantum Langevin\nequation.",
    "arxiv_id": "quant-ph/9503004",
    "authors": [
      "H. Kleinert",
      "S. V. Shabanov"
    ],
    "categories": [
      "quant-ph",
      "cond-mat",
      "hep-th"
    ],
    "doi": "10.1016/0375-9601(95)00169-4",
    "journal_ref": "Phys.Lett. A200 (1995) 224-232",
    "title": "Quantum Langevin equation from forward--backward path integral",
    "url": "https://arxiv.org/abs/quant-ph/9503004"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "bea90efd-61b2-4743-949a-e8180fbab572",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}