Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2007-11-27
Eur.Phys.J.ST156:207-215,2008
Physics
Nuclear Physics
Nuclear Theory
To be printed in the Proceedings of the International Les Houches School on "Exotic Nuclei: New Challenges", May 7-18 2007, Le
Scientific paper
10.1140/epjst/e2008-00618-x
The present contribution reports the first systematic finite-nucleus calculations performed using the Energy Density Functional method and a non-empirical pairing functional derived from low-momentum interactions. As a first step, the effects of Coulomb and the three-body force are omitted while only the bare two-nucleon interaction at lowest order is considered. To cope with the finite-range and non-locality of the bare nuclear interaction, the 1S0 channel of Vlowk is mapped onto a convenient operator form. For the first time, neutron-neutron and proton-proton pairing correlations generated in finite nuclei by the direct term of the two-nucleon interaction are characterized in a systematic manner. Eventually, such predictions are compared to those obtained from empirical local functionals derived from density-dependent zero range interactions. The characteristics of the latter are analyzed in view of that comparison and a specific modification of their isovector density dependence is suggested to accommodate Coulomb effects and the isovector trend of neutron gaps at the same time.
Duguet Thomas
Lesinski Thomas
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