{
  "annotation_id": "4fb43723-2a8e-4e33-a8ce-4e22724fd83a",
  "date_created": "2026-03-02T18:02:34.232000Z",
  "date_modified": "2026-03-02T18:02:34.232000Z",
  "file_hash": "dd708816d316daf763a619e92ea561377030eed98f00c114910725430a811fd5",
  "private": false,
  "record": {
    "abstract": "Using the matrix product formalism, we introduce a two parameter family of\nexactly solvable $xyz$ spin 1/2 Heisenberg chains in magnetic field (with\nnearest neighbor interactions) and calculate the ground state and correlation\nfunctions in compact form. The ground state has a very interesting property:\nall the pairs of spins are equally entangled with each other. Therefore it is\npossible to engineer long-range entanglement in experimentally realizable spin\nsystems on the one hand and study more closely quantum phase transition in such\nsystems on the other.",
    "arxiv_id": "quant-ph/0701160",
    "authors": [
      "M. Asoudeh",
      "V. Karimipour",
      "A. Sadrolashrafi"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.str-el"
    ],
    "doi": "10.1103/PhysRevA.76.012320",
    "journal_ref": "Phys. Rev. A 76, 012320 (2007)",
    "title": "Matrix product states and exactly solvable spin 1/2 Heisenberg chains   with nearest neighbor interactions",
    "url": "https://arxiv.org/abs/quant-ph/0701160"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "89932f33-eac2-4672-acd1-fe6b89b77db9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}