{
  "annotation_id": "690f8db7-49ca-40ae-8ef2-b0816e436db3",
  "date_created": "2026-03-02T18:02:20.537000Z",
  "date_modified": "2026-03-02T18:02:20.537000Z",
  "file_hash": "1d8e2dde012be7d59e5726f271811ac86db32d576b471b7cd4e7b22f3ea5ff13",
  "private": false,
  "record": {
    "abstract": "A relation between entanglement and criticality of spin chains is\nestablished. The entanglement we exploit is shared between auxiliary particles,\nwhich are isolated from each other, but are coupled to the same critical\nspin-1/2 chain. We analytically evaluate the reduced density matrix, and\nnumerically show the entanglement of the auxiliary particles in the proximity\nof the critical points of the spin chain. We find that the entanglement induced\nby the spin-chain may reach one, and it can signal very well the critical\npoints of the chain. A physical understanding and experimental realization with\ntrapped ions are presented.",
    "arxiv_id": "quant-ph/0511026",
    "authors": [
      "X. X. Yi",
      "H. T. Cui",
      "L. C. Wang"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.74.054102",
    "journal_ref": "Phys. Rev. A 74, 054102(2006)",
    "title": "Entanglement induced in spin-1/2 particles by a spin chain near its   critical points",
    "url": "https://arxiv.org/abs/quant-ph/0511026"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a46b9690-b193-444d-acd3-ac68bc559bb5",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}