{
  "annotation_id": "3c640b88-6fb6-4170-818a-ab924d74c8dd",
  "date_created": "2026-03-02T18:01:24.038000Z",
  "date_modified": "2026-03-02T18:01:24.038000Z",
  "file_hash": "c314b16b3dc66cdd461d51da90d4fb8fc8933813c83312338a774c997803b78a",
  "private": false,
  "record": {
    "abstract": "Using a Hartree-Fock mesh method and a configuration interaction approach\nbased on a generalized Gaussian basis set we investigate the behaviour of the\nexchange and correlation energies of small atoms and molecules, namely th e\nhelium and lithium atom as well as the hydrogen molecule, in the presence of a\nmagnetic field covering the regime B=0-100a.u. In general the importance of the\nexchange energy to the binding properties of at oms or molecules increases\nstrongly with increasing field strength. This is due to the spin-flip\ntransitions and in particular due to the contributions of the tightly bound\nhydrogenic state s which are involved in the corresponding ground states of\ndifferent symmetries. In contrast to the exchange energy the correlation energy\nbecomes less relevant with increasing field strength. This holds for the\nindividual configurations constituting the ground state and for the crossovers\nof the global ground state.",
    "arxiv_id": "physics/9902060",
    "authors": [
      "P. Schmelcher",
      "M. V. Ivanov",
      "W. Becken"
    ],
    "categories": [
      "physics.atom-ph",
      "physics.chem-ph"
    ],
    "doi": "10.1103/PhysRevA.59.3424",
    "title": "Exchange and correlation energies of ground states of atoms and   molecules in strong magnetic fields",
    "url": "https://arxiv.org/abs/physics/9902060"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1ff12c96-d1d6-444d-8063-32ce3fae7162",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}