{
  "annotation_id": "c313d621-efc7-47cf-af35-e077518433a6",
  "date_created": "2026-03-02T18:01:56.003000Z",
  "date_modified": "2026-03-02T18:01:56.003000Z",
  "file_hash": "5eb858d16f0804f8bf507f4d477b9d328f60d56b995d1662b05bfeaa752bcb67",
  "private": false,
  "record": {
    "abstract": "We study the time evolution for the quantum harmonic oscillator subjected to\na sudden change of frequency. It is based on an approximate analytic solution\nto the time dependent Ermakov equation for a step function. This approach\nallows for a continuous treatment that differs from former studies that involve\nthe matching of two time independent solutions at the time when the step\noccurs.",
    "arxiv_id": "quant-ph/0301111",
    "authors": [
      "H. Moya-Cessa",
      "M. Fernandez-Guasti"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/S0375-9601(03)00461-4",
    "journal_ref": "Phys. Lett. A 311, 1 (2003)",
    "title": "Coherent states for time dependent harmonic oscillator: the step   function",
    "url": "https://arxiv.org/abs/quant-ph/0301111"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "39579caa-8f36-4d98-b736-85874df97fae",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}