{
  "annotation_id": "6fda45a5-59e0-4e32-872e-9871944dfba6",
  "date_created": "2026-03-02T18:02:24.066000Z",
  "date_modified": "2026-03-02T18:02:24.066000Z",
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  "private": false,
  "record": {
    "abstract": "A stochastic model of a continuous nondemolition observation of a free\nquantum Brownian motion is presented. The nonlinear stochastic wave equation\ndescribing the posterior dynamics of the observed quantum system is solved in a\nGaussian case for a free particle of mass m. It is shown that the dispersion of\nthe wave packet does not increase to infinity like for the free unobserved\nparticle but tends to the finite limit.",
    "arxiv_id": "quant-ph/0512138",
    "authors": [
      "V. P. Belavkin",
      "P. Staszewski"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "Phys. Rev. A, 45 (1992) No 3, 1347--1356",
    "title": "Nondemolition observation of a free quantum particle",
    "url": "https://arxiv.org/abs/quant-ph/0512138"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d6eb0a8c-535a-41c7-af4d-c9a4126601bb",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}