{
  "annotation_id": "4d150f58-a0e9-47b6-905f-389007588309",
  "date_created": "2026-03-02T18:02:44.350000Z",
  "date_modified": "2026-03-02T18:02:44.350000Z",
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  "record": {
    "abstract": "The application of the optimized expansion for the quantum-mechanical\npropagation in the anharmonic potential $\\lambda x^4$ is discussed for real and\nimaginary time. The first order results in the imaginary time formalism provide\napproximations to the free energy and particle density which agree well with\nthe exact results in the whole range of temperatures.",
    "arxiv_id": "quant-ph/9807044",
    "authors": [
      "Anna Okopi\u0144ska"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/S0375-9601(98)00750-6",
    "journal_ref": "Phys.Lett. A249 (1998) 259-264",
    "title": "Optimized perturbation method for the propagation in the anharmonic   oscillator potential",
    "url": "https://arxiv.org/abs/quant-ph/9807044"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "726b21dc-e92e-4e8a-88c3-6e8c41e31d95",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}