{
  "annotation_id": "9daaf8fc-57b4-4f1e-a574-b6f392233103",
  "date_created": "2026-03-02T18:02:37.949000Z",
  "date_modified": "2026-03-02T18:02:37.949000Z",
  "file_hash": "1972559c90b3a25781784441bfe05f0bce43537a9d5978062a1e6625e2181bca",
  "private": false,
  "record": {
    "abstract": "Variational weak-coupling perturbation theory yields converging\napproximations, uniformly in the coupling strength. This allows us to calculate\ndirectly the coefficients of `strong-coupling\u0027 expansions. For the anharmonic\noscillator we explain the physical origin of the empirically observed\nconvergence behavior which is exponentially fast with superimposed\noscillations.",
    "arxiv_id": "quant-ph/9609027",
    "authors": [
      "Wolfhard Janke",
      "Hagen Kleinert"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Convergence Behavior of Variational Perturbation Expansions",
    "url": "https://arxiv.org/abs/quant-ph/9609027"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "dd3e767a-4325-4f05-a918-9664aa22fa2e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}