Isospin symmetry breaking in an algebraic pairing Sp(4) model

Abstract

An exactly solvable sp(4) algebraic approach extends beyond the traditional isospin conserving nuclear interaction to bring forward effects of isospin symmetry breaking and isospin mixing resulting from a two-body nuclear interaction that includes proton-neutron (pn) and like-particle isovector pairing correlations plus significant isoscalar pn interactions. The model yields an estimate for the extent to which isobaric analog 0+ states in light and medium mass nuclei may mix with one another and reveals possible, but still extremely weak, non-analog beta-decay transitions.

arXiv comment8 pages, 2 figures

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Cited by in corpus (2)

• Underlying symmetries of realistic interactions and the nuclear many-body problem
• Racah's method for general subalgebra chains: Coupling coefficients of SO(5) in canonical and physical bases