{
  "annotation_id": "5dbdb9a4-7bc7-4582-836a-3e9a1ddfa8fc",
  "date_created": "2026-03-02T18:00:57.294000Z",
  "date_modified": "2026-03-02T18:00:57.294000Z",
  "file_hash": "c242b28487015a47aa0d26353234d5172e793beee7b2a2ae8f262cf6bdf5b2ca",
  "private": false,
  "record": {
    "abstract": "We present the first formulation and application of relativistic unitary\ncoupled cluster theory to atomic properties. The remarkable features of this\ntheory are highlighted, and it is used to calculate the lifetimes of\n$5^{2}D_{3/2}$ and $6^{2}P_{3/2}$ states of $Ba^{+}$ and $Pb^{+}$ respectively.\nThe results clearly suggest that it is very well suited for accurate \\emph{ab\ninitio} calculations of properties of heavy atomic systems.",
    "arxiv_id": "physics/0502033",
    "authors": [
      "Chiranjib Sur",
      "Rajat K Chaudhuri",
      "Bijaya K. Sahoo",
      "B. P. Das",
      "D. Mukherjee"
    ],
    "categories": [
      "physics.atom-ph",
      "physics.chem-ph",
      "physics.comp-ph"
    ],
    "title": "Relativistic unitary coupled cluster theory and applications",
    "url": "https://arxiv.org/abs/physics/0502033"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8f3ee8cd-ecec-4ef4-9ea4-28f579c01539",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}