{
  "annotation_id": "623555a3-73a8-4daa-add5-8c468c7451ab",
  "date_created": "2026-03-02T18:00:43.425000Z",
  "date_modified": "2026-03-02T18:00:43.425000Z",
  "file_hash": "cdb0c234ffe465bdf98b1d38730ab6541c94fd3bb2473807e953af9922c8b24c",
  "private": false,
  "record": {
    "abstract": "We describe the results of an experiment to test for spacetime anisotropy\nterms that might exist from Lorentz violations. The apparatus consists of a\npair of cylindrical superconducting cavity-stabilized oscillators operating in\nthe TM_{010} mode with one axis east-west and the other vertical. Spatial\nanisotropy is detected by monitoring the beat frequency at the sidereal rate\nand its first harmonic. We see no anisotropy to a part in 10^{13}. This puts a\ncomparable bound on four linear combinations of parameters in the general\nStandard Model extension, and a weaker bound of \u003c4 x 10^{-9} on three others.",
    "arxiv_id": "physics/0302093",
    "authors": [
      "J. A. Lipa",
      "J. A. Nissen",
      "S. Wang",
      "D. A. Stricker",
      "D. Avaloff"
    ],
    "categories": [
      "physics.class-ph",
      "gr-qc",
      "hep-ex",
      "hep-ph",
      "physics.gen-ph"
    ],
    "doi": "10.1103/PhysRevLett.90.060403",
    "journal_ref": "Phys.Rev.Lett.90:060403,2003",
    "title": "A New Limit on Signals of Lorentz Violation in Electrodynamics",
    "url": "https://arxiv.org/abs/physics/0302093"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a0a70946-dc0e-4487-900a-5106482c470b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}