{
  "annotation_id": "52cf77f2-acd8-4fea-80dc-0ac0ad15c008",
  "date_created": "2026-03-02T18:02:16.674000Z",
  "date_modified": "2026-03-02T18:02:16.674000Z",
  "file_hash": "9d09b4fda84fe8bccc05eb06ebc4f99b09713fcbc22549db83f2e89bc5448ced",
  "private": false,
  "record": {
    "abstract": "We study the dynamics of entanglement for the XY-model, one-dimensional spin\nsystems coupled through nearest neighbor exchange interaction and subject to an\nexternal time-dependent magnetic field. Using the two-site density matrix, we\ncalculate the time-dependent entanglement of formation between nearest neighbor\nqubits. We investigate the effect of varying the temperature, the anisotropy\nparameter and the external time-dependent magnetic field on the entanglement.\nWe have found that the entanglement can be localized between nearest neighbor\nqubits for certain values of the external time-dependent magnetic field.\nMoreover, as known for the magnetization of this model, the entanglement shows\nnonergodic behavior, it does not approach its equilibrium value at the infinite\ntime limit.",
    "arxiv_id": "quant-ph/0505101",
    "authors": [
      "Zhen Huang",
      "Sabre Kais"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Dynamics of Entanglement for One-Dimensional Spin Systems in an External   Time-Dependent Magnetic Field",
    "url": "https://arxiv.org/abs/quant-ph/0505101"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7eb2047d-269f-4356-93b2-6edb1c0233a2",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}