{
  "annotation_id": "275478eb-c645-4f8e-bb2d-b005bdb66e77",
  "date_created": "2026-03-02T18:02:45.242000Z",
  "date_modified": "2026-03-02T18:02:45.242000Z",
  "file_hash": "93243f90f2d917cde63488b2aa634a2a4fd40f893364d25210be0856f91e1387",
  "private": false,
  "record": {
    "abstract": "We investigate an all-quantum-mechanical spin network, in which a subset of\nspins, the $K$ ``moving agents\u0027\u0027, are subject to local and pair unitary\ntransformations controlled by their position with respect to a fixed ring of\n$M$ ``environmental\u0027\u0027-spins. We demonstrate that a ``flow of coherence\u0027\u0027\nresults between the various subsystems. Despite entanglement between the agents\nand between agent and environment, local (non-linear) invariants may persist,\nwhich then show up as fascinating patterns in each agent\u0027s Bloch-sphere. Such\npatterns disappear, though, if the agents are controlled by different rules.\nGeometric aspects thus help to understand the interplay between entanglement\nand decoherence.",
    "arxiv_id": "quant-ph/9902024",
    "authors": [
      "Ilki Kim",
      "Guenter Mahler"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Moving quantum agents in a finite environment",
    "url": "https://arxiv.org/abs/quant-ph/9902024"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ff6012ee-1beb-4ccb-bf9a-25e5c52c60b2",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}