{
  "annotation_id": "13d67311-df08-455d-9795-786575be6940",
  "date_created": "2026-03-02T18:02:38.022000Z",
  "date_modified": "2026-03-02T18:02:38.022000Z",
  "file_hash": "7997b7cc934bb75fa9bb05790f417444466464d4ae5830bef01a276ce9c51f0f",
  "private": false,
  "record": {
    "abstract": "For many physical quantities, theory supplies weak- and strong-coupling\nexpansions of the types $\\sum a_n \\alpha ^n$ and $ \\alpha ^p\\sum b_n\n(\\alpha^{-2/q) ^n$, respectively. Either or both of these may have a zero\nradius of convergence. We present a simple interpolation algorithm which\nrapidly converges for an increasing number of known expansion coefficients. The\naccuracy is illustrated by calculating the ground state energies of the\nanharmonic oscillator using only the leading large-order coefficient $b_0$\n(apart from the trivial expansion coefficent $a_0=1/2$). The errors are less\nthan 0.5 for all g. The algorithm is applied to find energy and mass of the\nFr\\\"ohlich-Feynman polaron. Our mass is quite different from Feynman\u0027s\nvariational approach.",
    "arxiv_id": "quant-ph/9507005",
    "authors": [
      "H. Kleinert"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/0375-9601(95)00683-T",
    "journal_ref": "Phys.Lett. A207 (1995) 133",
    "title": "Variational Interpolation Algorithm between Weak- and Strong-Coupling   Expansions",
    "url": "https://arxiv.org/abs/quant-ph/9507005"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fe8e367d-9b55-4674-8bb5-78a2f5dd20cb",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}