{
  "annotation_id": "7a1f34f0-be5f-408b-bbb7-cf9f3e5b09f5",
  "date_created": "2026-03-02T18:02:45.026000Z",
  "date_modified": "2026-03-02T18:02:45.026000Z",
  "file_hash": "4f5dc730cda4fa2d3ff75b51873aaa91ec4088459df50da0a901df95974cf03c",
  "private": false,
  "record": {
    "abstract": "We find a one-parameter Gaussian state for an anharmonic oscillator with\nquadratic and quartic terms, which depends on the energy expectation value. For\nthe weak coupling constant, the Gaussian state is a squeezed state of the\nvacuum state. However, for the strong coupling constant, the Gaussian state\nrepresents a different kind of condensation of bosonic particles through a\nnonlinear Bogoliubov transformation of the vacuum state.",
    "arxiv_id": "quant-ph/9902047",
    "authors": [
      "Jung Kon Kim",
      "Sang Pyo Kim",
      "Kwang-Gi Park"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "J.Korean Phys.Soc. 34 (1999) 473-476",
    "title": "One-Parameter Gaussian State of Anharmonic Oscillator: Nonlinear   Realization of Bogoliubov Transformation",
    "url": "https://arxiv.org/abs/quant-ph/9902047"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "231b1630-68c1-4800-afa1-ba127ee4e4ff",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}