{
  "annotation_id": "6a7e95be-da0f-4767-8a52-e3b26f5d38e4",
  "date_created": "2026-03-02T18:01:55.397000Z",
  "date_modified": "2026-03-02T18:01:55.397000Z",
  "file_hash": "dd18bc77172c48455daa9e0c244dbe7569ab1d3443e6c98049c9b05df7cf2224",
  "private": false,
  "record": {
    "abstract": "We consider a simple one dimensional quantum system consisting of a heavy and\na light particle interacting via a point interaction. The initial state is\nchosen to be a product state, with the heavy particle described by a coherent\nsuperposition of two spatially separated wave packets with opposite momentum\nand the light particle localized in the region between the two wave packets. We\ncharacterize the asymptotic dynamics of the system in the limit of small mass\nratio, with an explicit control of the error. We derive the corresponding\nreduced density matrix for the heavy particle and explicitly compute the\n(partial) decoherence effect for the heavy particle induced by the presence of\nthe light one for a particular set up of the parameters.",
    "arxiv_id": "quant-ph/0210199",
    "authors": [
      "D. Duerr",
      "R. Figari",
      "A. Teta"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Decoherence in a Two-Particle Model",
    "url": "https://arxiv.org/abs/quant-ph/0210199"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fba97c01-8f64-43e2-b2bc-51c243184463",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}