{
  "annotation_id": "11581abf-6555-4ac5-b8e1-4e0582052350",
  "date_created": "2026-03-02T18:02:13.337000Z",
  "date_modified": "2026-03-02T18:02:13.337000Z",
  "file_hash": "6c49e529f475c4b8f53b1546efc923629a30692209f23e730f89266079ed7e94",
  "private": false,
  "record": {
    "abstract": "We discuss the detection of entanglement in interacting quantum spin systems.\nFirst, thermodynamic Hamiltonian-based witnesses are computed for a general\nclass of one-dimensional spin-1/2 models. Second, we introduce optimal\nbipartite entanglement observables. We show that a bipartite entanglement\nmeasure can generally be associated to a set of independent two-body spin\nobservables whose expectation values can be used to witness entanglement. The\nnumber of necessary observables is ruled by the symmetries of the model.\nIllustrative examples are presented.",
    "arxiv_id": "quant-ph/0412099",
    "authors": [
      "L. -A. Wu",
      "S. Bandyopadhyay",
      "M. S. Sarandy",
      "D. A. Lidar"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.stat-mech",
      "cond-mat.str-el"
    ],
    "doi": "10.1103/PhysRevA.72.032309",
    "journal_ref": "Phys. Rev. A 72, 032309 (2005)",
    "title": "Entanglement Observables and Witnesses for Interacting Quantum Spin   Systems",
    "url": "https://arxiv.org/abs/quant-ph/0412099"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b18b0aac-8f7f-4113-a8a4-602a471263dc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}