{
  "annotation_id": "d28ea623-ac9d-4325-9250-73861229ecdd",
  "date_created": "2026-03-02T18:00:50.363000Z",
  "date_modified": "2026-03-02T18:00:50.363000Z",
  "file_hash": "00eda542aa088b96d1e61bcba56f1fda9d2193409569743a815981a62c9c89af",
  "private": false,
  "record": {
    "abstract": "We show why a dynamically varying fine structure constant does not impact on\nthe Webb group\u0027s analysis as suggested by Bekenstein. We also provide a limit\non the size of a possible correction to the Dirac Hamiltonian caused by a\nperturbation due to a dynamically varying alpha in hydrogen.",
    "arxiv_id": "physics/0403009",
    "authors": [
      "E. J. Angstmann",
      "V. V. Flambaum",
      "S. G. Karshenboim"
    ],
    "categories": [
      "physics.atom-ph",
      "astro-ph",
      "hep-th"
    ],
    "doi": "10.1103/PhysRevA.70.044104",
    "title": "Cosmological Variation of the Fine Structure Constant versus a new   Interaction",
    "url": "https://arxiv.org/abs/physics/0403009"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5597266f-b03b-46f8-b179-6f2ef0c39d6a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}