{
  "annotation_id": "dd0ffceb-1745-457a-8848-238d319f2a7d",
  "date_created": "2026-03-02T18:02:02.267000Z",
  "date_modified": "2026-03-02T18:02:02.267000Z",
  "file_hash": "a317bd7a4574490e7f49aec00bf9832372a0ca77d15d549b8b2ce59c0205323a",
  "private": false,
  "record": {
    "abstract": "Entanglement sharing among pairs of spins in Heisenberg antiferromagnets is\ninvestigated using the concurrence measure. For a nondegenerate S=0 ground\nstate, a simple formula relates the concurrence to the diagonal correlation\nfunction. The concurrence length is seen to be extremely short. A few finite\nclusters are studied numerically, to see the trend in higher dimensions. It is\nargued that nearest-neighbour concurrence is zero for triangular and Kagome\nlattices. The concurrences in the maximal-spin states are explicitly\ncalculated, where the concurrence averaged over all pairs is larger than the\nS=0 states.",
    "arxiv_id": "quant-ph/0309004",
    "authors": [
      "V. Subrahmanyam"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.str-el"
    ],
    "doi": "10.1103/PhysRevA.69.022311",
    "journal_ref": "Phys. Rev. A69, 022311 (2004)",
    "title": "Quantum Entanglement in Heisenberg Antiferromagnets",
    "url": "https://arxiv.org/abs/quant-ph/0309004"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "eec94a2d-0ecd-4f68-95b8-372c4732af1b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}