Nucleon-Pair Shell Model within a Symmetry Broken Basis

Journal Article · 25 August 2023 · Symmetry

DOI: https://doi.org/10.3390/sym15091653 · OSTI ID:2500925

He, Bingcheng ; Zhang, Siyao; Zhang, Yu; Li, Lei; Luo, Yanan; Pan, Feng ; Draayer, Jerry P.

The nucleon-pair shell model (NPSM) within the framework of a broken symmetry basis is studied. The results demonstrate the validity of such a scheme, which in turn leads to a significant reduction in the dimensionality of the multi-pair configuration space. Specifically, in the case of an axially-deformed basis, the results yield a satisfactory description of the low-lying spectrum, even without the need for applying the projection procedure. In the case of a triaxially-deformed basis, the result of variation after angular momentum projection suggest a potential for using the NPSM to find exact solutions in a semi-magic system.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: China Postdoctoral Science Foundation; National Natural Science Foundation of China (NSFC); National Science Foundation (NSF); Natural Science Foundation of Tianjin; USDOE; USDOE Office of Science (SC), Nuclear Physics (NP)
• Grant/Contract Number: AC02-06CH11357; SC0005248
• OSTI ID: 2500925
• Journal Information: Symmetry, Journal Name: Symmetry Journal Issue: 9 Vol. 15; ISSN SYMMAM; ISSN 2073-8994
• Publisher: MDPI AGCopyright Statement
• Country of Publication: Switzerland
• Language: English