{
  "annotation_id": "4824190d-0e83-4342-bc23-756b2b0146f7",
  "date_created": "2026-03-02T18:02:40.512000Z",
  "date_modified": "2026-03-02T18:02:40.512000Z",
  "file_hash": "85de526c567ad319e023f78cb7037c6ebab4d6629b1fbaf0654939e897fba7ac",
  "private": false,
  "record": {
    "abstract": "Overcomplete families of states of the type of Barut-Girardello coherent\nstates (BG CS) are constructed for noncompact algebras $u(p,q)$ and $sp(N,C)$\nin quadratic bosonic representation. The $sp(N,C)$ BG CS are obtained in the\nform of multimode ordinary Schr\\\"odinger cat states. A set of such macroscopic\nsuperpositions is pointed out which is overcomplete in the whole $N$ mode\nHilbert space (while the associated $sp(N,C)$ representation is reducible). The\nmultimode squared amplitude Schr\\\"odinger cat states are introduced as\nmacroscopic superpositions of the obtained $sp(N,C)$ BG CS.}",
    "arxiv_id": "quant-ph/9706028",
    "authors": [
      "D. A. Trifonov"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Barut-Girardello coherent states for sp(N,C) and multimode Schr\\\"odinger   cat states",
    "url": "https://arxiv.org/abs/quant-ph/9706028"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c04f9699-ada6-4791-a8e8-25125430c9a1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}