Abstract
AbstractThe purpose of this paper is to show that symmetry breaking into special subgroups is not special at all, contrary to the usual wisdom. To demonstrate this explicitly, we examine the dynamical symmetry breaking pattern in four-dimensional $SU(N)$ Nambu–Jona-Lasinio-type models in which the fermion matter belongs to an irreducible representation of $SU(N)$. Potential analysis shows that for almost all cases at the potential minimum the $SU(N)$ group symmetry is broken to its special subgroups such as $SO(N)$ or ${USp}(N)$ when symmetry breaking occurs.
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