{
  "annotation_id": "f9934731-780e-4b67-b762-1325338e3b72",
  "date_created": "2026-03-02T18:02:16.616000Z",
  "date_modified": "2026-03-02T18:02:16.616000Z",
  "file_hash": "5c0ab36133b67c28f33563e1772139f715b6b928da16492210aab9574a3d3e8b",
  "private": false,
  "record": {
    "abstract": "We derive recursively the perturbation series for the ground-state energy of\nthe D-dimensional anharmonic oscillator and resum it using variational\nperturbation theory (VPT). From the exponentially fast converging approximants,\nwe extract the coefficients of the large-D expansion to higher orders. The\ncalculation effort is much smaller than in the standard field-theoretic\napproach based on the Hubbard-Stratonovich transformation.",
    "arxiv_id": "quant-ph/0504146",
    "authors": [
      "Sebastian F. Brandt",
      "Axel Pelster"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1063/1.2116247",
    "journal_ref": "Journal of Mathematical Physics 46, 112105 (2005)",
    "title": "Large-D Expansion from Variational Perturbation Theory",
    "url": "https://arxiv.org/abs/quant-ph/0504146"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "37e802e0-6d1f-41ce-a393-694d5ccb921b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}