{
  "annotation_id": "01e742ce-24e9-48a0-8819-c51a844bdac6",
  "date_created": "2026-03-02T18:01:38.870000Z",
  "date_modified": "2026-03-02T18:01:38.870000Z",
  "file_hash": "f61d4bb3662a1e1bf03630b68c22fd73a74c528dceeefe5f727e049f1ebfa33d",
  "private": false,
  "record": {
    "abstract": "Single-site measurement in a distributed macroscopic antiferromagnet is\nconsidered; we show that it can create antiferromagnetic sublattices at\nmacroscopic scale. We demonstrate that the result of measurement depends on the\nsymmetry of the ground state: for the easy-axis case the Neel state is formed,\nwhile for the easy-plane case unusual ``fan\u0027\u0027 sublattices appear with unbroken\nrotational symmetry, and a decoherence wave is generated. For the latter case,\na macroscopically large number of measurements is needed to pin down the\norientation of the sublattices, in spite of the high degeneracy of the ground\nstate. We note that the type of the final state and the appearance of the\ndecoherence wave are governed by the degree of entanglement of spins in the\nsystem.",
    "arxiv_id": "quant-ph/0009098",
    "authors": [
      "M. I. Katsnelson",
      "V. V. Dobrovitski",
      "B. N. Harmon"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevB.63.212404",
    "title": "Neel state of antiferromagnet as a result of a local measurement in the   distributed quantum system",
    "url": "https://arxiv.org/abs/quant-ph/0009098"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7ae72a49-b5f1-4e44-9973-d59b4d355dec",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}