{
  "annotation_id": "a1cbb84b-fb57-4233-b635-26eaeb663d4c",
  "date_created": "2026-03-02T18:02:13.629000Z",
  "date_modified": "2026-03-02T18:02:13.629000Z",
  "file_hash": "0abc8e778156fe82f62ebf5a596b431bd882ccef0292f4c1d6035d2dd0e77fe3",
  "private": false,
  "record": {
    "abstract": "We study the dynamics of entanglement in spin gases. A spin gas consists of a\n(large) number of interacting particles whose random motion is described\nclassically while their internal degrees of freedom are described\nquantum-mechanically. We determine the entanglement that occurs naturally in\nsuch systems for specific types of quantum interactions. At the same time,\nthese systems provide microscopic models for non--Markovian decoherence: the\ninteraction of a group of particles with other particles belonging to a\nbackground gas are treated exactly, and differences between collective and\nnon--collective decoherence processes are studied. We give quantitative results\nfor the Boltzmann gas and also for a lattice gas, which could be realized by\nneutral atoms hopping in an optical lattice. These models can be simulated\nefficiently for systems of mesoscopic sizes (N ~ 10^5).",
    "arxiv_id": "quant-ph/0502017",
    "authors": [
      "J. Calsamiglia",
      "L. Hartmann",
      "W. D\u00fcr",
      "H. -J. Briegel"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Entanglement and decoherence in spin gases",
    "url": "https://arxiv.org/abs/quant-ph/0502017"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "92e78fb7-3535-40e1-abe9-dc4266a15847",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}