{
  "annotation_id": "1f7aeef8-6a0d-4cd6-af08-788894497973",
  "date_created": "2026-03-02T18:01:00.590000Z",
  "date_modified": "2026-03-02T18:01:00.590000Z",
  "file_hash": "ed002018db6a188fe220d217a8e1e0eed38b1874433820fbaa4ae0f0e04b2ed7",
  "private": false,
  "record": {
    "abstract": "Hylleraas in 1929 carried out a variational computation on the Schrodinger\nequation for the helium atom which gave, for the first time, a ground-state\nenergy in essential agreement with experimental results. Coolidge and James in\n1933, likewise did the first accurate computation for the hydrogen molecule.\nThese are considered epoch-making contributions in the development of ab initio\nquantum chemistry, since they provided definitive evidence for the validity of\nthe multiple-particle Schrodinger equation for atoms and molecules. Before\nthen, exact solutions had been obtained only for one-electron hydrogenlike\natoms. The helium and hydrogen work was done long before the advent of\nelectronic computers and required many months of drudgery, using hand-cranked\ncalculating machines. Nowadays, students of chemistry and physics can carry out\nthese same computations in a matter of hours, or even minutes, using relatively\nstraightforward Mathematica routines. Moreover, the results can be easily\nimproved far beyond the capabilities of the original workers.",
    "arxiv_id": "physics/0509135",
    "authors": [
      "S. M. Blinder"
    ],
    "categories": [
      "physics.ed-ph",
      "physics.comp-ph"
    ],
    "title": "Personal computer realizations for two classics of quantum chemistry",
    "url": "https://arxiv.org/abs/physics/0509135"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4253cfca-b049-4741-bcb2-0170a0bf7d1b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}