Nucleon-pair approximation with uncoupled representation

• 作者: Y.Lei Y.Lu Y.M.Zhao
• 来源期刊: 中国物理C（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: NUCLEAR PHYSICS
• 页码范围: 129-140
• 页数: 12页
• 语种: 英文
• DOI: 10.1088/1674-1137/abe3ed

摘要

In this paper,we propose an approach to nucleon-pair approximation (NPA) with m-scheme bases,in which the collective nucleon pairs are represented in terms of antisymmetric matrices,and commutations between nucleon pairs are given using a matrix multiplication that avoids angular-momentum couplings and recouplings.Therefore the present approach significantly simplifies the NPA computation.Furthermore,it is formulated on the same footing with and without isospin.