{
  "annotation_id": "ebf0c2da-d465-4db4-bff5-5fc82b384024",
  "date_created": "2026-03-02T18:02:10.294000Z",
  "date_modified": "2026-03-02T18:02:10.294000Z",
  "file_hash": "bc4d69b9a4f455d4b068b0a63821117c55754c38f7f16474a8d8a15c73ac7c09",
  "private": false,
  "record": {
    "abstract": "Entanglement of the ground states in $XXZ$ and dimerized Heisenberg spin\nchains as well as in a two-leg spin ladder is analyzed by using the spin-spin\nconcurrence and the entanglement entropy between a selected sublattice of spins\nand the rest of the system. In particular, we reveal that quantum phase\ntransition points/boundaries may be identified based on the analysis on the\nlocal extreme of this entanglement entropy, which is illustrated to be superior\nover the concurrence scenario and may enable us to explore quantum phase\ntransitions in many other systems including higher dimensional ones.",
    "arxiv_id": "quant-ph/0407228",
    "authors": [
      "Yan Chen",
      "Paolo Zanardi",
      "Z. D. Wang",
      "F. C. Zhang"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1367-2630/8/6/097",
    "journal_ref": "New Journal of Physics 8, 97 (2006).",
    "title": "Entanglement and Quantum Phase Transition in Low Dimensional Spin   Systems",
    "url": "https://arxiv.org/abs/quant-ph/0407228"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "27671794-bf2d-4a18-ac18-81eccf5f0507",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}