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| HAL : hal-00140169, version 4 |
| arXiv : 0704.0731 |
| DOI : 10.1103/PhysRevC.76.014312 |
| Fiche détaillée |  Récupérer au format |
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| Physical Review C 76 (2007) 014312 |
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| Versions disponibles : | v1 (05-04-2007) | v2 (05-04-2007) | v3 (11-06-2007) | v4 (27-07-2007) |
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| The tensor part of the Skyrme energy density functional. I. Spherical nuclei |
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T. Lesinski 1M. Bender 2, 3 |
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| (26/07/2007) |
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| We perform a systematic study of the impact of the J^2 tensor term in the Skyrme energy functional on properties of spherical nuclei. In the Skyrme energy functional, the tensor terms originate both from zero-range central and tensor forces. We build a set of 36 parameterizations, which covers a wide range of the parameter space of the isoscalar and isovector tensor term coupling constants, with a fit protocol very similar to that of the successful SLy parameterizations. We analyze the impact of the tensor terms on a large variety of observables in spherical mean-field calculations, such as the spin-orbit splittings and single-particle spectra of doubly-magic nuclei, the evolution of spin-orbit splittings along chains of semi-magic nuclei, mass residuals of spherical nuclei, and known anomalies of charge radii. Our main conclusion is that the currently used central and spin-orbit parts of the Skyrme energy density functional are not flexible enough to allow for the presence of large tensor terms. |
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| 1 : | Institut de Physique Nucléaire de Lyon (IPNL) |
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CNRS : UMR5822 – IN2P3 – Université Claude Bernard - Lyon I |
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| 2 : | Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA) |
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CEA : DSM/DAPNIA |
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| 3 : | Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG) |
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CNRS : UMR5797 – IN2P3 – Université Sciences et Technologies - Bordeaux I |
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| 4 : | National Superconducting Cyclotron Laboratory, Michigan State University (NSCL, MSU) |
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National Superconducting Cyclotron Laboratory – Michigan State University |
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| THEO;théorie |
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| Domaine | : | Physique/Physique Nucléaire Théorique |
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| tensor force – spin-orbit force – Skyrme interaction – single-particle energies – binding energies – charge radii |
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| Liste des fichiers attachés à ce document : | ||||||||||
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| hal-00140169, version 4 | |
| http://hal.archives-ouvertes.fr/hal-00140169 | |
| oai:hal.archives-ouvertes.fr:hal-00140169 | |
| Contributeur : Thomas Lesinski | |
| Soumis le : Vendredi 27 Juillet 2007, 17:30:48 | |
| Dernière modification le : Vendredi 4 Juillet 2008, 14:30:32 | |
