{
  "annotation_id": "9f43cea5-2c12-4c66-8630-25bea83e88ae",
  "date_created": "2026-03-02T18:02:17.199000Z",
  "date_modified": "2026-03-02T18:02:17.199000Z",
  "file_hash": "64e5896b30f6c496f8cc5a4d5bad37b746faf9174765ce9f84d87067f8b2676c",
  "private": false,
  "record": {
    "abstract": "The conventional quantum Brownian propagator, which describes the evolution\nof a system of interest bilinearly coupled to and initially uncorrelated with a\nreservoir, does not preserve positivity of density operators, prompting workers\nto modify the propagator by the ad hoc addition of time-independent terms to\nthe corresponding generator. We show that no such terms need be added to the\ngenerator to preserve positivity provided one accounts for the rapid\nentanglement of the system of interest and the reservoir on a time scale too\nshort for the conventional propagator to be valid.",
    "arxiv_id": "quant-ph/0505017",
    "authors": [
      "Allan Tameshtit"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "The Inner Limit of Quantum Brownian Evolution and its Relevance to   Positivity",
    "url": "https://arxiv.org/abs/quant-ph/0505017"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ace65218-9fb0-479a-8beb-9fee27951cd0",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}