Overlap

Abstract

The overlap formulation of regulated vectorial and chiral gauge theories is reviewed. Ostensibly new constructions, based on the Ginsparg-Wilson relation are essentially just overlap with new notation. At present there exists no satisfactory realization of chiral symmetries outside perturbation theory which is structurally different from the overlap.

Comments: 12 pages, Latex, sty file included, talk at CHIRAL '99, Taipei, Sep. 13-18, 1999