dorsal/arxiv
View SchemaPairing Gap and Polarisation Effects
| Authors | K. Rutz, M. Bender, P. -G. Reinhard, J. A. Maruhn |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9910026 |
| URL | https://arxiv.org/abs/nucl-th/9910026 |
| DOI | 10.1016/S0370-2693(99)01190-9 |
| Journal | Phys.Lett. B468 (1999) 1-6 |
Abstract
The phenomenological adjustment of the nuclear pairing strength is usually performed with respect to the odd-even staggering of the binding energies. We find that the results strongly depend on the way in which the ground states of the odd nuclei are computed. A thorough calculation including all time-even and time-odd polarisation effects induced by the odd nucleon produces about 30% reduced odd-even staggering as compared to the standard spherical calculations in the relativistic mean-field model. The pairing strength must be enhanced by about 20% to compensate for that effect. The enhanced strength has dramatic consequences for the predicted deformation properties of the underlying mean-field models, possibly implying that new adjustments of their parameters become necessary as well.
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"abstract": "The phenomenological adjustment of the nuclear pairing strength is usually\nperformed with respect to the odd-even staggering of the binding energies. We\nfind that the results strongly depend on the way in which the ground states of\nthe odd nuclei are computed. A thorough calculation including all time-even and\ntime-odd polarisation effects induced by the odd nucleon produces about 30%\nreduced odd-even staggering as compared to the standard spherical calculations\nin the relativistic mean-field model. The pairing strength must be enhanced by\nabout 20% to compensate for that effect. The enhanced strength has dramatic\nconsequences for the predicted deformation properties of the underlying\nmean-field models, possibly implying that new adjustments of their parameters\nbecome necessary as well.",
"arxiv_id": "nucl-th/9910026",
"authors": [
"K. Rutz",
"M. Bender",
"P. -G. Reinhard",
"J. A. Maruhn"
],
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"nucl-th"
],
"doi": "10.1016/S0370-2693(99)01190-9",
"journal_ref": "Phys.Lett. B468 (1999) 1-6",
"title": "Pairing Gap and Polarisation Effects",
"url": "https://arxiv.org/abs/nucl-th/9910026"
},
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