{
  "annotation_id": "6336e740-300a-4ecb-9483-812536f5d301",
  "date_created": "2026-03-02T18:00:39.481000Z",
  "date_modified": "2026-03-02T18:00:39.481000Z",
  "file_hash": "4f62a9cc887a64a463157f6a71eca00c14b28be9a5b34b3962e5763f280a2352",
  "private": false,
  "record": {
    "abstract": "A study of the first excited states of beryllium atom starting from\nexplicitly correlated wave functions is carried out. Several properties are\nobtained and discussed focusing on the analysis of the Hund\u0027s rules in terms of\nthe single--particle and electron pair intracule and extracule densities. A\nsystematic study of the differences on the electronic distributions of the\nsinglet and triplet states is carried out. The trial wave function used to\ndescribe the different bound states consists of a generalized Jastrow-type\ncorrelation factor times a configuration interaction model wave function. This\nmodel wave function has been fixed by using a generalization of the optimized\neffective potential method to deal with multiconfiguration wave functions. The\noptimization of the wave function and the calculation of the different\nquantities is carried out by means of the Variational Monte Carlo method.",
    "arxiv_id": "physics/0206015",
    "authors": [
      "F. J. Galvez",
      "E. Buendia",
      "A. Sarsa"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1063/1.1559915",
    "journal_ref": "J. Chem. Phys. 117, 6071-6082 (2002)",
    "title": "Excited states of beryllium atom from explicitly correlated wave   functions",
    "url": "https://arxiv.org/abs/physics/0206015"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "769e0cc9-e514-4936-a73b-a7055f6f9b13",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}