{
  "annotation_id": "48eeacd2-7152-46a6-b419-3375feb0985d",
  "date_created": "2026-03-02T18:02:02.859000Z",
  "date_modified": "2026-03-02T18:02:02.859000Z",
  "file_hash": "665ae5db0ed78cd371666e8179a7a1b960688a81a80a359c4849f160a8180f70",
  "private": false,
  "record": {
    "abstract": "We show that the generalized Bell inequality is violated in the extended\nHeisenberg model when the temperature is below a threshold value. The threshold\ntemperature values are obtained by constructing exact solutions of the model\nusing the temperature-dependent correlation functions. The effect due to the\npresence of external magnetic field is also illustrated.",
    "arxiv_id": "quant-ph/0311146",
    "authors": [
      "Chunfeng Wu",
      "Jing-Ling Chen",
      "D. M. Tong",
      "L. C. Kwek",
      "C. H. Oh"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0305-4470/37/47/016",
    "journal_ref": "J. Phys. A: Math. Gen. 37 (2004) 11475-11483",
    "title": "Quantum nonlocality of Heisenberg XX model with Site-dependent Coupling   Strength",
    "url": "https://arxiv.org/abs/quant-ph/0311146"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e73832eb-e5fc-48f2-8087-3e7294328cbc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}