{
  "annotation_id": "c2660dcd-b87c-487d-9912-244de5258867",
  "date_created": "2026-03-02T18:01:59.821000Z",
  "date_modified": "2026-03-02T18:01:59.821000Z",
  "file_hash": "1009b5976a41b31fb98bb0bbd645089cfb9bad4683b53deeb59a82f181772cf8",
  "private": false,
  "record": {
    "abstract": "Exceptional points associated with non-hermitian operators, i.e. operators\nbeing non-hermitian for real parameter values, are investigated. The specific\ncharacteristics of the eigenfunctions at the exceptional point are worked out.\n  Within the domain of real parameters the exceptional points are the points\nwhere eigenvalues switch from real to complex values. These and other results\nare exemplified by a classical problem leading to exceptional points of a\nnon-hermitian matrix.",
    "arxiv_id": "quant-ph/0304152",
    "authors": [
      "W. D. Heiss"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0305-4470/37/6/034",
    "title": "Exceptional Points of Non-hermitian Operators",
    "url": "https://arxiv.org/abs/quant-ph/0304152"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "afba416a-99aa-403c-a036-3b48eb503221",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}