{
  "annotation_id": "86cf7ffb-fdb0-4ae2-897b-0597fa961bf1",
  "date_created": "2026-03-02T18:00:25.882000Z",
  "date_modified": "2026-03-02T18:00:25.882000Z",
  "file_hash": "10fb2bddf2bb2cf8ff7cd8eff75935dae260ba92f78e49813937f9d2281e3379",
  "private": false,
  "record": {
    "abstract": "Recent calculations using random two-body interactions showed a preponderance\nof J(P)=0(+) ground states, despite the fact that there is no strong pairing\ncharacter in the force. We carry out an analysis of a system of identical\nparticles occupying orbits with j=1/2, 3/2 and 5/2 and discuss some general\nfeatures of the spectra derived from random two-body interactions. We show that\nfor random two-body interactions that are not time-reversal invariant the\ndominance of 0(+) states in this case is more pronounced, indicating that\ntime-reversal invariance cannot be the origin of the 0(+) dominance.",
    "arxiv_id": "nucl-th/9906046",
    "authors": [
      "R. Bijker",
      "A. Frank",
      "S. Pittel"
    ],
    "categories": [
      "nucl-th",
      "chao-dyn",
      "nlin.CD"
    ],
    "doi": "10.1103/PhysRevC.60.021302",
    "journal_ref": "Phys. Rev. C 60 (1999) 021302",
    "title": "On the dominance of J(P)=0(+) ground states in even-even nuclei from   random two-body interactions",
    "url": "https://arxiv.org/abs/nucl-th/9906046"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a37f5aff-3af1-4a8c-b3b7-15b6eec9745b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}