{
  "annotation_id": "517f5b4c-3c20-4764-a95d-204badce12f0",
  "date_created": "2026-03-02T18:00:49.844000Z",
  "date_modified": "2026-03-02T18:00:49.844000Z",
  "file_hash": "4760f002db9a2ff386fd99d29fd278047a169d236314df503ca89e2a342c3a66",
  "private": false,
  "record": {
    "abstract": "This work presents a first time accurate calculation of the magnetic dipole\nhyperfine structure constants for the ground state and some low-lying excited\nstates of Pb$^+$. By comparing different levels of approximation with\nexperimental results, we demonstrate the importance of correlation effects\nwhich reach beyond lower order relativistic many body perturbation theory.\nEmploying relativistic coupled-cluster theory we obtain a quantitative\nunderstanding of the core-polarization and correlation effects inherent in this\nsystem and observe completely different trends compared to $Ba^+$.",
    "arxiv_id": "physics/0407117",
    "authors": [
      "Bijaya K. Sahoo",
      "Rajat K. Chaudhuri",
      "B. P. Das",
      "Holger Merlitz",
      "Debashis Mukherjee"
    ],
    "categories": [
      "physics.atom-ph",
      "physics.comp-ph"
    ],
    "doi": "10.1103/PhysRevA.72.032507",
    "title": "Application of Relativistic Coupled-cluster Theory to Heavy Atomic   Systems with Strongly Interacting Configurations: Hyperfine Interactions in   $^{207}Pb^+$",
    "url": "https://arxiv.org/abs/physics/0407117"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "67d98ebd-f13d-4adc-8d57-05c20a436402",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}