{
  "annotation_id": "d8d6ade6-da1a-4f27-9fe8-090328d6fab3",
  "date_created": "2026-03-02T18:00:46.976000Z",
  "date_modified": "2026-03-02T18:00:46.976000Z",
  "file_hash": "651bb536095f07c87d80e728f1b951dce91b20433f68d60bddceb11f181d1183",
  "private": false,
  "record": {
    "abstract": "The incorporation of the Breit interaction in atomic and molecular\ncalculations is discussed in the framework of four-component all-electron and\ntwo-component relativistic effective core potential (RECP)formalisms.\nContributions of the Breit interaction between different core and valence\nshells are studied in the Dirac-Fock approximation for the uranium, plutonium,\nekathallium (Z=113), ekalead (Z=114) and other heavy atoms. It is shown that\nthe two-electron Breit effects between the valence electrons can be neglected\nfor \"chemical accuracy\" (1 kcal/mol) of calculation of spectroscopic properties\nof systems containing superheavy elements and actinides whereas large core-core\nand core-valence Breit contributions can be efficiently described by\none-electron RECP operators. Different versions of the generalized RECPs with\nthe Breit interaction taken into account are constructed for uranium and\nplutonium and tested in comparison with the corresponding all-electron\nfour-component calculations.",
    "arxiv_id": "physics/0311026",
    "authors": [
      "A. N. Petrov",
      "N. S. Mosyagin",
      "A. V. Titov",
      "I. I. Tupitsyn"
    ],
    "categories": [
      "physics.chem-ph",
      "physics.atom-ph"
    ],
    "title": "Accounting for Breit interaction in actinide and superheavy element   compounds: 1. General remarks",
    "url": "https://arxiv.org/abs/physics/0311026"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "49d0bc1b-bd09-43b2-8659-399f4d316b63",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}