{
  "annotation_id": "7ddf0b81-cf00-4cef-a8c4-5766f9a4ee88",
  "date_created": "2026-03-02T18:02:20.098000Z",
  "date_modified": "2026-03-02T18:02:20.098000Z",
  "file_hash": "656727468c6f4caed572123e14b003470a9cdb3de49c2ebca6a94e5c15790b08",
  "private": false,
  "record": {
    "abstract": "The ground entanglement and thermal entanglement in quantum mixed spin chains\nconsisting of two integer spins 1 and two half integer spins 1/2 arrayed as\n${1/2}-{1/2}-1-1$ in a unit cell with antiferromagnetic nearest-neighbor\ncouplings $J_1$($J_2$) between the spins of equal (different) magnitudes, are\ninvestigated by adopting the log-negativity. The ground entanglement transition\nfound here is closely related with the valence bond state transition, and the\nthermal entanglement near the critical point is calculated and shown that two\ndistinct behaviors exist in the nearest neighbor same kind of spins and\ndifferent kind of spins, respectively. The potential application of our results\non the quantum information processing is also discussed.",
    "arxiv_id": "quant-ph/0508115",
    "authors": [
      "Shang-Bin Li",
      "Zhao-Xing Xu",
      "Jian-Hui Dai",
      "Jing-Bo Xu"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.str-el"
    ],
    "doi": "10.1103/PhysRevB.73.184411",
    "journal_ref": "Phys. Rev. B 73, 184411 (2006)",
    "title": "Entanglement and quantum phase transition in quantum mixed spin chains",
    "url": "https://arxiv.org/abs/quant-ph/0508115"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9e8be511-d74c-4b89-9dbc-722842a5324e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}