Single-particle nondegeneracy and SU(3) fermion dynamical symmetry.

Abstract

It is shown that the SU(3) symmetry for low-lying states of the fermion dynamical symmetry model is essentially preserved even for highly nondegenerate spherical single-particle energies. The breaking of SU(3) symmetry by single-particle energy terms in heritage-0 configurations for either normal deformation or superdeformation occurs only through an indirect Pauli effect and is significant only when the spherical single-particle splitting within shells is artificially large relative to that observed experimentally.