{
  "annotation_id": "91bfd5a2-7369-4850-af0d-d417bfd19954",
  "date_created": "2026-03-02T18:02:06.645000Z",
  "date_modified": "2026-03-02T18:02:06.645000Z",
  "file_hash": "6c038b62299e4eb1d900ad2acd1857e27423a9594dfb91c8aa10daadaf4cf4f5",
  "private": false,
  "record": {
    "abstract": "We numerically investigate decoherence of a two-spin system (central system)\nby a bath of many spins 1/2. By carefully adjusting parameters, the dynamical\nregime of the bath has been varied from quantum chaos to regular, while all\nother dynamical characteristics have been kept practically intact. We\nexplicitly demonstrate that for a many-body quantum bath, the onset of quantum\nchaos leads to significantly faster and stronger decoherence compared to an\nequivalent non-chaotic bath. Moreover, the non-diagonal elements of the\nsystem\u0027s density matrix decay differently for chaotic and non-chaotic baths.\nTherefore, knowledge of the basic parameters of the bath (strength of the\nsystem-bath interaction, bath\u0027s spectral density of states) is not always\nsufficient, and much finer details of the bath\u0027s dynamics can strongly affect\nthe decoherence process.",
    "arxiv_id": "quant-ph/0406001",
    "authors": [
      "J. Lages",
      "V. V. Dobrovitski",
      "B. N. Harmon"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevE.72.026225",
    "title": "Decoherence by a chaotic many-spin bath",
    "url": "https://arxiv.org/abs/quant-ph/0406001"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0ad9ae5e-1d7f-4525-a90b-2a90bb1ebfd6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}