Effects of the particle-number projection on the isovector pairing energy

被引：0
|
作者：
N. H. Allal
M. Fellah
M. R. Oudih
N. Benhamouda
机构：
[1] USTHB,Laboratoire de Physique Theorique, Faculte de Physique
[2] COMENA,Centre de Recherche Nucleaire d'Alger
来源：
The European Physical Journal A - Hadrons and Nuclei | 2006年 / 27卷
关键词：
21.60.-n Nuclear structure models and methods; 21.30.Fe Forces in hadronic systems and effective interactions;
D O I：
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学科分类号：
摘要：
The usual neutron-proton BCS wave function is simultaneously projected on both the good neutron and proton numbers using a discrete projection operator. The projected energy of the system is deduced as a limit of rapidly convergent sequence. It is numerically studied for the N = Z nuclei of which “experimental” pairing gaps may be deduced from the experimental odd-even mass differences. It then appears that the particle-number fluctuation effect is even more important than in the case of pairing between like-particles.
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页码：301 / 306
页数：5
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