Eur. Phys. J. A 13, 401-403 (2002)
DOI: 10.1140/epja/iepja1347

Short Note

Differences between pairing and zero-range effective interactions for nuclear binding energies

K. Heyde¹, R. Fossion¹, J.E. García-Ramos¹, C. De Coster¹ and R.F. Casten<sup>2

1</sup>  Department of Subatomic and Radiation Physics, Proeftuinstraat, 86 B-9000 Gent, Belgium
²  Wright Nuclear Structure Laboratory, Yale University, New Haven, CT 06520, USA

kris.heyde@rug.ac.be

(Received: 29 November 2001 / Revised version: 23 January 2002 Communicated by P. Schuck)

Abstract
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.

PACS
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