{
  "annotation_id": "604c1609-f42d-4182-83a5-d9755253c51c",
  "date_created": "2026-03-02T18:01:11.166000Z",
  "date_modified": "2026-03-02T18:01:11.166000Z",
  "file_hash": "6844ce1e681e64c0b2b06624b7062bc6dfed3200509442eeb76db84525ca3423",
  "private": false,
  "record": {
    "abstract": "Black-body radiation (BBR) shift is an important systematic correction for\nthe atomic frequency standards realizing the SI unit of time. Presently, there\nis a controversy over the value of the BBR shift for the primary $^{133}$Cs\nstandard. At room temperatures the values from various groups differ at $3\n\\times 10^{-15}$ level, while the modern clocks are aiming at $10^{-16}$\naccuracies. We carry out high-precision relativistic many-body calculations of\nthe BBR shift. For the BBR coefficient $\\beta$ at $T=300K$ we obtain\n$\\beta=-(1.708\\pm0.006) \\times 10^{-14}$, implying $6 \\times 10^{-17}$\nfractional uncertainty. While in accord with the most accurate measurement, our\n0.35%-accurate value is in a substantial, 10%, disagreement with recent\nsemi-empirical calculations. We identify an oversight in those calculations.",
    "arxiv_id": "physics/0606048",
    "authors": [
      "K. Beloy",
      "U. I. Safronova",
      "A. Derevianko"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1103/PhysRevLett.97.040801",
    "title": "High-accuracy calculation of black-body radiation shift in $^{133}$Cs   primary frequency standard",
    "url": "https://arxiv.org/abs/physics/0606048"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e861aea2-370f-483c-b421-b96f5da0080f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}