Generator Coordinate Method with Proton-Neutron Pairing Fluctuations and Magnetic Properties of N = Z Odd-Odd Nuclei

被引：1

作者：

Uzawa, K. ^{[1
]}

Hinohara, N. ^{[2
,3
,4
]}

Nakatsukasa, T. ^{[2
,3
,5
]}

机构：

[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[2] Univ Tsukuba, Ctr Computat Sci, Tsukuba, Ibaraki 3058577, Japan

[3] Univ Tsukuba, Fac Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan

[4] Michigan State Univ, Facil Rare Isotope Beams, E Lansing, MI 48824 USA

[5] RIKEN, Nishina Ctr, Wako 3510198, Japan

来源：

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS | 2024年 / 2024卷 / 05期

基金：

日本学术振兴会;

关键词：

MEAN-FIELD;

D O I：

10.1093/ptep/ptae072

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Pairing correlations play an important role in a variety of nuclear phenomena. However, a quantitative understanding of proton-neutron (pn) pairing, especially isoscalar pn pairing (S = 1, T = 0), remains elusive. To clarify the property of pn pairing, we investigate the roles of pn pairing in the M1 transition of N = Z odd-odd nuclei. We develop a theoretical model based on the generator coordinate method (GCM) in which the isoscalar and isovector pn-pair amplitudes are used as the generator coordinates. Using the particle and the angular-momentum projections, the pn-pair GCM well reproduces the M1 transition of odd-odd nuclei for the exactly solvable SO(8) model. We apply the method to N = Z odd-odd nuclei and find that the experimental values of B(M1) are well reproduced. We also study the sensitivity of B(M1) to the strength of the isoscalar pairing interaction.

引用

页数：15