{
  "annotation_id": "b50d6e95-5f48-49e5-905c-9cff7b17f83e",
  "date_created": "2026-03-02T18:00:22.041000Z",
  "date_modified": "2026-03-02T18:00:22.041000Z",
  "file_hash": "545fb7631de0e329388abcb5657ef20b00dd4c6c9c90c32a088c56483580214a",
  "private": false,
  "record": {
    "abstract": "A simple model based on the group SO(5) suggests that both the like-particle\nand neutron-proton components of isovector pairing correlations in odd-A nuclei\nare Pauli blocked. The same effect emerges from Monte Carlo Shell-model\ncalculations of proton-rich nuclei in the full fp shell. There are small\ndifferences between the two models in their representation of the effects of an\nodd nucleon on the competition between like-particle and neutron-proton\npairing, but they can be understood and reduced by using a two-level version of\nthe SO(5) model. On the other hand, in odd-odd nuclei with N not equal to Z\nSO(5) disagrees more severely with the shell model because it incorrectly\npredicts ground-state isospins. The shell model calculations for any fp-shell\nnuclei can be extended to finite temperature, where they show a decrease in\nblocking.",
    "arxiv_id": "nucl-th/9803018",
    "authors": [
      "Jonathan Engel",
      "Karlheinz Langanke",
      "Petr Vogel"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0370-2693(98)00477-8",
    "journal_ref": "Phys.Lett. B429 (1998) 215-221",
    "title": "Isovector Pairing in Odd-A Proton-Rich Nuclei",
    "url": "https://arxiv.org/abs/nucl-th/9803018"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e48833e1-607f-4136-883a-711ab8f40591",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}