{
  "annotation_id": "3a131198-61fa-4cee-8216-5275ad0e9e1c",
  "date_created": "2026-03-02T18:02:13.080000Z",
  "date_modified": "2026-03-02T18:02:13.080000Z",
  "file_hash": "cbc1137865d276ce85ea627d1c90eb617b18bf3215688a6f07cd3aba1919063e",
  "private": false,
  "record": {
    "abstract": "We investigate the presence of multipartite entanglement in macroscopic spin\nchains. We discuss the Heisenberg and the XY model and derive bounds on the\ninternal energy for systems without multipartite entanglement. Based on this we\nshow that in thermal equilibrium the above mentioned spin systems contain\ngenuine multipartite entanglement, even at finite modest temperatures.",
    "arxiv_id": "quant-ph/0502160",
    "authors": [
      "Otfried Guehne",
      "Geza Toth",
      "Hans J. Briegel"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.stat-mech"
    ],
    "doi": "10.1088/1367-2630/7/1/229",
    "journal_ref": "New J. Phys. 7, 229 (2005)",
    "title": "Multipartite entanglement in spin chains",
    "url": "https://arxiv.org/abs/quant-ph/0502160"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3b4a96ef-9d87-495b-b48c-692ff0e0fa21",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}