Partial Dynamical Symmetry as an Intermediate Symmetry Structure

Abstract

We introduce the notion of a partial dynamical symmetry for which a prescribed symmetry is neither exact nor completely broken. We survey the different types of partial dynamical symmetries and present empirical examples in each category.Comment: 10 pages, 5 figures, Proc. Int. Conf. on "Symmetry in Physics", March 23-30, 2003, Erice Ital