{
  "annotation_id": "456bec42-8b50-4d00-adc2-b7b29407790b",
  "date_created": "2026-03-02T18:00:25.136000Z",
  "date_modified": "2026-03-02T18:00:25.136000Z",
  "file_hash": "bc5793738cf1f47bab77c925fcfb6379e75bc527ad403ba25cd57a551e3579ac",
  "private": false,
  "record": {
    "abstract": "The linear response approach to nuclear transport has been extended to pair\ncorrelations. The latter are treated within a mean field approximation to a\npairing interaction with constant matrix elements $G$. The constraint of\nparticle number conservation has been accounted for on a time dependent\naverage, which leads to modified response functions, both in the pairing degree\nof freedom as well as in the shape variable. The former is expressed by the gap\nparameter $\\Delta$ and the latter by a $Q$ which specifies the elongation of a\nfissioning nucleus. The tensors for friction and inertia corresponding to these\ntwo collective coordinates are computed along the fission path of $^{224}Th$\nfor temperatures around $T=1 \\mev$ and less. It is seen that dissipation\ndecreases with decreasing temperature and increasing pairing gap and falls well\nbelow the values of common \"macroscopic models\". Both friction and inertia show\na sensible dependence on the configurations of the mean field caused both by\nshell effects as well as by avoided crossings of single-particle levels.",
    "arxiv_id": "nucl-th/9905057",
    "authors": [
      "F. A. Ivanyuk",
      "H. Hofmann"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/S0375-9474(99)00324-3",
    "journal_ref": "Nucl.Phys. A657 (1999) 19-58",
    "title": "Pairing and shell effects in the transport coefficients of collective   motion",
    "url": "https://arxiv.org/abs/nucl-th/9905057"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ba0aee0f-20cf-4204-9fc4-5349db05496c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}