Geometrical generalization of γ₅-invariance

Abstract

It will be shown that all the free Lagrangians and the well-established strong, intermediate and weak interaction Lagrangians are invariant for a special transformation which has a simple geometrical meaning and is a natural generalization of the γ5-transformation. This invariance with certain further requirements can limit the possible interaction types to a very small number. © 1959 Società Italiana di Fisica.