Isospin symmetry breaking and large-scale shell-model calculations with the Sakurai-Sugiura method
1 Institute of Natural Sciences, Senshu University, Tokyo 101-8425, Japan
2 Department of Physics, Kyushu Sangyo University, Fukuoka 813-8503, Japan
3 Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China
4 Department of Applied Physics, Fukuoka University, Fukuoka 814-0180, Japan
Published online: 28 May 2015
Recently isospin symmetry breaking for mass 60-70 region has been investigated based on large-scale shell-model calculations in terms of mirror energy diﬀerences (MED), Coulomb energy diﬀerences (CED) and triplet energy diﬀerences (TED). Behind these investigations, we have encountered a subtle problem in numerical calculations for odd-odd N = Z nuclei with large-scale shell-model calculations. Here we focus on how to solve this subtle problem by the Sakurai-Sugiura (SS) method, which has been recently proposed as a new diagonalization method and has been successfully applied to nuclear shell-model calculations.
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