{
  "annotation_id": "06567d6d-383e-4acd-8bb6-4f1f39baf36b",
  "date_created": "2026-03-02T18:01:56.686000Z",
  "date_modified": "2026-03-02T18:01:56.686000Z",
  "file_hash": "84e313d4352f6ee5420adb365ed8652ad181e2e1968bdf4b1f26855fcecc5ac2",
  "private": false,
  "record": {
    "abstract": "The thermal entanglement in Heisenberg $XYZ$ chain is investigated in the\npresence of external magnetic field $B$. In the two-qubit system, the critical\nmagnetic field $B_c$ is increased because of introducing the interaction of the\nz-component of two neighboring spins $J_z$. This interaction not only improves\nthe critical temperature $T_c,$ but also enhances the entanglement for\nparticular fixed $B$. We also analyze the pairwise entanglement between nearest\nneighbors in three qubits. The pairwise entanglement, for a fixed $T$, can be\nstrong by controlling $B$ and $J_z$. PACS: 03.65. Ud, 03.67. -a, 75.10. Jm",
    "arxiv_id": "quant-ph/0302094",
    "authors": [
      "L. Zhou",
      "H. S. Song",
      "Y. Q. Guo"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.68.024301",
    "journal_ref": "Phys. Rev. A 68, 024301 (2003)",
    "title": "Enhanced the thermal Entanglement in Anisotropy XYZ Heisenberg Chain",
    "url": "https://arxiv.org/abs/quant-ph/0302094"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9c7fdc4a-00b3-4af6-b344-d326c509bf4c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}