{
  "annotation_id": "4e9d5870-b0cc-4f33-a9bc-e851a5e87e59",
  "date_created": "2026-03-02T18:02:38.004000Z",
  "date_modified": "2026-03-02T18:02:38.004000Z",
  "file_hash": "5f5f166b58024f1d3abfdafe3ceb7eed8fcbc39e3a83b78dcab066c9c5dfda54",
  "private": false,
  "record": {
    "abstract": "For time-dependent systems the wavefunction depends explicitly on time and it\nis not a pure state of the Hamiltonian. We construct operators for which the\nabove wavefunction is a pure state. The method is based on the introduction of\nconserved quantities $Q$ and the pure states are defined by ${\\hat\nQ}\\psi=q\\psi$. The conserved quantities are constructed using parametrised\nmechanics and the Noether theorem.",
    "arxiv_id": "quant-ph/9504001",
    "authors": [
      "Victor Tapia"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Quantum mechanics of time-dependent systems. Construction of pure states",
    "url": "https://arxiv.org/abs/quant-ph/9504001"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1906097b-8609-47a5-8e7e-746bcf1c7135",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}