{
  "annotation_id": "c98fe773-b909-4d29-92f8-f6975d40d276",
  "date_created": "2026-03-02T18:00:42.797000Z",
  "date_modified": "2026-03-02T18:00:42.797000Z",
  "file_hash": "b7b8f5a18fddf1e3310d040f3b32eda2aa49504a155c4a1741b86df3540cdf42",
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  "record": {
    "abstract": "Recent studies of spacetime anisotropy in the context of local Lorentz\ninvariance (LLI) based on classical Michelson-Morley experiments, as well\nKennedy-Thorndyke tests, pointed out the existence of terms first order in v/c\nand of angular signatures independent of v. This contribution replaces the\nLorentz symmetry by a velocity gauge transformation following an argument\ncentred on observability. Results show even and odd order terms and indicate\nthat motion is always underestimated in the spatiotemporal platform. Though LLI\nis not recovered in exact special relativistic terms, the alternative looks\ncompatible with the relational aspects of general relativity (GR) with variable\nspeed of light models as well a nonzero photon mass. This raises the hypothesis\nthat Einstein equivalence principle, and consequently LLI, is a cornerstone of\nGR, but not necessarily a fundamental one of SR",
    "arxiv_id": "physics/0305037",
    "authors": [
      "R. Assumpcao"
    ],
    "categories": [
      "physics.gen-ph"
    ],
    "journal_ref": "in Proceedings of the tenth Marcel Grossmann Meeting on General\n  Relativity, Part B, pp 1455-1458, 2005",
    "title": "Signs of Lorentz violation in electrodynamics: variable speed of light   and the photon mass",
    "url": "https://arxiv.org/abs/physics/0305037"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "86205304-7743-4e9e-8e63-64661ae20004",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}