{
  "annotation_id": "cfc76ce3-b8f2-4a2e-a9d7-23afeba59aae",
  "date_created": "2026-03-02T18:02:15.897000Z",
  "date_modified": "2026-03-02T18:02:15.897000Z",
  "file_hash": "db1203faf5f4fd5b5ccc12a9b851bdbc0a66bcaded7da13c9c4aa0da4692e142",
  "private": false,
  "record": {
    "abstract": "We classify entanglement singularities for various two-mode bosonic systems\nin terms of catastrophe theory. Employing an abstract phase-space\nrepresentation, we obtain exact results in limiting cases for the entropy in\ncusp, butterfly, and two-dimensional catastrophes. We furthermore use numerical\nresults to extract the scaling of the entropy with the non-linearity parameter,\nand discuss the role of mixing entropies in more complex systems.",
    "arxiv_id": "quant-ph/0503160",
    "authors": [
      "Clive Emary",
      "Neill Lambert",
      "Tobias Brandes"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.mes-hall"
    ],
    "doi": "10.1103/PhysRevA.71.062302",
    "title": "Entanglement in quantum catastrophes",
    "url": "https://arxiv.org/abs/quant-ph/0503160"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fc55c52f-90d2-43e2-ac45-fb9bd902a4f7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}