{
  "annotation_id": "018737cf-4226-40b0-bd3b-1791de2d5462",
  "date_created": "2026-03-02T18:02:45.179000Z",
  "date_modified": "2026-03-02T18:02:45.179000Z",
  "file_hash": "111e9a85b24ff26c0d12345d63d554f2892625bd012b3c4f0986ba5361e62f38",
  "private": false,
  "record": {
    "abstract": "Each scheme of state reconstruction comes down to parametrize the state of a\nquantum system by expectation values or probabilities directly measurable in an\nexperiment. It is argued that the time evolution of these quantities provides\nan unambiguous description of the quantal dynamics. This is shown explicitly\nfor a single spin s, using a quorum of expectation values which contains no\nredundant information. The quantum mechanical time evolution of the system is\nrephrased in terms of a closed set of linear first-order differential equations\ncoupling (2s+1)^2 expectation values. This `realization\u0027 of the dynamical law\nrefers neither to the wavefunction of the system nor to its statistical\noperator.",
    "arxiv_id": "quant-ph/9903103",
    "authors": [
      "Stefan Weigert"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.84.802",
    "journal_ref": "Phys.Rev.Lett.84:802,2000",
    "title": "Quantum Time Evolution in Terms of Nonredundant Expectation Values",
    "url": "https://arxiv.org/abs/quant-ph/9903103"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "77a8a9b3-7a4e-4f4d-b74d-1f8c41ac61af",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}