{
  "annotation_id": "7e94762e-bf2d-4660-a806-f5e11abc9090",
  "date_created": "2026-03-02T18:02:23.940000Z",
  "date_modified": "2026-03-02T18:02:23.940000Z",
  "file_hash": "506e9fba5acf26fc269ab5a9027056373f286934b9c532a66bb215bbd6cee6b6",
  "private": false,
  "record": {
    "abstract": "Space-time symmetries and internal quantum symmetries can be placed on equal\nfooting in a hyperspin geometry. Four-dimensional classical space-time emerges\nas a result of a decoherence that disentangles the quantum and the space-time\ndegrees of freedom. A map from the quantum space-time to classical space-time\nthat preserves the causality relations of space-time events is necessarily a\ndensity matrix.",
    "arxiv_id": "quant-ph/0601020",
    "authors": [
      "Dorje C. Brody",
      "Lane P. Hughston"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Quantum states and space-time causality",
    "url": "https://arxiv.org/abs/quant-ph/0601020"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e3b5888f-7be2-4a3a-9d31-cde2ee145aa5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}