{
  "annotation_id": "2fa57c46-ad3b-4c57-bb6e-a0a8b4e10fc9",
  "date_created": "2026-03-02T18:00:28.689000Z",
  "date_modified": "2026-03-02T18:00:28.689000Z",
  "file_hash": "6468eb6f06d4dd04a4507264953c970f76edfa6c691447286845e301e4b5e643",
  "private": false,
  "record": {
    "abstract": "We have computed the Bethe logarithms for the 1 singlet S, 2 singlet S and 2\ntriplet S states of the helium atom to about seven figure-accuracy using a\ngeneralization of a method first developed by Charles Schwartz. We have also\ncalculated the Bethe logarithms for the helium-like ions of Li, Be, O and S for\nall three states to study the 1/Z behavior of the results. The Bethe logarithm\nof H minus was also calculated with somewhat less accuracy. The use of our\nBethe logarithms for the excited states of neutral helium, instead of those\nfrom Goldman and Drake\u0027s first-order 1/Z-expansion, reduces by several orders\nof magnitude the discrepancies between the theoretically calculated and\nexperimentally measured ionization potentials of these states.",
    "arxiv_id": "physics/0002005",
    "authors": [
      "Jonathan D. Baker",
      "Robert C. Forrey",
      "Malgorzata Jeziorska",
      "John D. Morgan III"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "title": "Bethe logarithms for the 1 singlet S, 2 singlet S and 2 triplet S states   of helium and helium-like ions",
    "url": "https://arxiv.org/abs/physics/0002005"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b3a6b052-6ce4-40df-8b8a-d03883a1a4c7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}