Eur. Phys. J. A 13, 401-403 (2002)
Differences between pairing and zero-range effective interactions for nuclear binding energiesK. Heyde1, R. Fossion1, J.E. García-Ramos1, C. De Coster1 and R.F. Casten2
1 Department of Subatomic and Radiation Physics, Proeftuinstraat, 86 B-9000 Gent, Belgium
2 Wright Nuclear Structure Laboratory, Yale University, New Haven, CT 06520, USA
(Received: 29 November 2001 / Revised version: 23 January 2002 Communicated by P. Schuck)
In this paper, we show that, although the spectroscopic properties of the monopole pairing force and a zero-range delta-function interaction are very similar, their saturation properties are quite different. In particular, the predictions for binding energies when filling up a major shell are radically different past mid-shell. This has significant consequences for understanding the masses and binding energies of long isotopic chains of nuclei that will be accessible with advanced exotic beam facilities.
21.10.Dr - Binding energies and masses.
21.30.Fe - Forces in hadronic systems and effective interactions.
21.60.Cs - Shell model.
© Società Italiana di Fisica, Springer-Verlag 2002