{
  "annotation_id": "c123c1a9-9cf2-4c49-9f3b-cdfe5f7c2bc5",
  "date_created": "2026-03-02T18:02:41.656000Z",
  "date_modified": "2026-03-02T18:02:41.656000Z",
  "file_hash": "3d267d054e83ca5796c3fa46336dcfb196889ed5657cc469b3ea23fe9e0de405",
  "private": false,
  "record": {
    "abstract": "We consider scattering of a three-dimensional particle on a finite family of\ndelta potentials. For some parameter values the scattering wavenctions exhibit\nnodal lines in the form of closed loops, which may touch but do not entangle.\nThe corresponding probability current forms vortical singularities around these\nlines; if the scattered particle is charged, this gives rise to magnetic flux\nloops. The conclusions extend to scattering on hard obstacles or smooth\npotentials.",
    "arxiv_id": "quant-ph/9710030",
    "authors": [
      "Pavel Exner",
      "Petr Seba"
    ],
    "categories": [
      "quant-ph",
      "cond-mat"
    ],
    "doi": "10.1016/S0375-9601(98)00366-1",
    "journal_ref": "Phys.Lett. A245 (1998) 35-39",
    "title": "Probability current tornado loops in three-dimensional scattering",
    "url": "https://arxiv.org/abs/quant-ph/9710030"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "49ca32d3-b557-41de-91d2-4ed79a3b8d2c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}