Braided Structure in 4-dimensional conformal Quantum Field Theory

Abstract

Higher dimensional conformal QFT possesses an interesting braided structure which, different from the d=1+1 models, is restricted to the timelike region and therefore easily escapes euclidean action methods. It lies behind the spectrum of anomalous dimensions which may be viewed as a kind of substitute for a missing particle interpretation in the presence of interactions.

Comments: Dedicated to Gerhard Mack and Robert Schrader on the occasion of their 60th birthday, submitted to Phys. Lett. B, 10 pages, improvements of the formulation, shortening of the text, addition of a formula, removal of typos