A nuclear mass formula based onSU(4) symmetry

被引：0

作者：

P. Van Isacker

O. Juillet

B. K. Gjelsten

机构：

[1] GANIL,Fysisk Institutt

[2] Universitetet i Bergen,undefined

来源：

Foundations of Physics | 1997年 / 27卷

关键词：

Mass Formula; Shell Correction; Isospin Symmetry; Interact Boson Model; Pairing Term;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

It is argued that mass anomalies at the N≈Z line are associated with SU(4) isospin-spin symmetry. Drawing on these arguments, a Weizsäcker-type nuclear mass formula is investigated which has the eigenvalue of the quadratic Casimir operator of SU(4) as a Wigner term. This SU(4)-based mass formula yields a better agreement than the one with the usual Wigner term |N—Z|/A. In addition, the SU(4) eigenvalue expression adequately replaces the usual pairing term of the Weizsäcker formula giving a lower overall rms deviation than the latter.

引用

页码：1047 / 1060

页数：13

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