{
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  "date_created": "2026-03-02T18:00:39.721000Z",
  "date_modified": "2026-03-02T18:00:39.721000Z",
  "file_hash": "9449c7eca38aa1993b56dfe7483a5060316825ca5be720255977a3c99d990acc",
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  "record": {
    "abstract": "A brief overview is given on precision determinations of values of the\nfundamental physical constants and the search for their variation with time by\nmeans of precision spectroscopy in the optical domain.",
    "arxiv_id": "physics/0201050",
    "authors": [
      "Savely G. Karshenboim"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "journal_ref": "In \"Laser Physics at the Limits\", ed. by H. Figger, D. Meschede\n  and C. Zimmermann, (Springer-Verlag, Berlin, Heidelberg, 2001), pp. 165-176",
    "title": "Precision Optical Measurements and Fundamental Physical Constants",
    "url": "https://arxiv.org/abs/physics/0201050"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fa7045cc-adbc-43eb-b3dd-eefb2d1ce6a9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}