{
  "annotation_id": "869bb9e0-4b00-42fb-89b0-acd2718bce0d",
  "date_created": "2026-03-02T18:02:34.317000Z",
  "date_modified": "2026-03-02T18:02:34.317000Z",
  "file_hash": "33d00a8a8aaf14c912f84e4c33c9a1491ab4b0d0829c84e73916e52cb0aebdb7",
  "private": false,
  "record": {
    "abstract": "We investigate entanglement of spin pairs in alternating open spin chains in\nthe equilibrium state in an external magnetic field. We calculate the reduced\ndensity matrix of spin pairs and estimate the concurrence with Wootter\u0027s\ncriteria. The obtained results demonstrate the dependence of the entanglement\non the temperature, chain\u0027s length, the positions of the spins, and the ratio\nof the spin-spin interaction constants.",
    "arxiv_id": "quant-ph/0703010",
    "authors": [
      "S. I. Doronin",
      "E. B. Fel\u0027dman",
      "A. N. Pyrkov"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.other"
    ],
    "doi": "10.1134/S1063776107110088",
    "journal_ref": "JETP Letters, Vol. 85, pp. 519 (2007).",
    "title": "Entanglement in alternating open spin-1/2 chains with XY-Hamiltonian",
    "url": "https://arxiv.org/abs/quant-ph/0703010"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d1a8cbf0-e187-4630-a40b-0b877e618779",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}