Rigid triaxiality has the SU(3) symmetry: $^{166}$Er as an example
Nuclear Theory
2026-04-07 v1
Abstract
The emergence of triaxiality in the low-lying collective bands of Er is systematically explored within the SU3-IBM. In this framework, SU(3) higher-order interactions are included, which enable the descriptions of various quadrupole deformations. The triaxiality of Er is described with a triaxiality angle . In addition, the calculated energy spectra, transition strengths, and quadrupole moments show excellent agreement with experimental data. These results provide further evidence supporting the SU(3) triaxial interpretation of Er and confirm its triaxial deformation rather than the prolate shape.
Keywords
Cite
@article{arxiv.2604.04584,
title = {Rigid triaxiality has the SU(3) symmetry: $^{166}$Er as an example},
author = {Chunxiao Zhou and Xue Shang and Tao Wang},
journal= {arXiv preprint arXiv:2604.04584},
year = {2026}
}