Speaker
Dr
Jean-Francois MATHIOT
(Laboratoire de Physique Corpusculaire)
Description
The analysis of physical observables in terms of energy/momentum scales necessitates to disantangle spurious scales originating from the divergence of ill-defined integrals from the physical scales inherent to the dynamics of a given system. The use of finite field theories is thus of particular interest in this separation. We shall investigate this question in the light of the recently proposed Taylor-Lagrange regularization scheme applied to light-front dynamics. We calculate the coefficients of the renormalization group equation in this scheme and compare them with the standard derivation using dimensional regularization in different renormalization schemes. We find that the renormalization group equations should be mass-dependent in any renormalization scheme, in contrast to what is usually assumed.
Primary author
Dr
Jean-Francois MATHIOT
(Laboratoire de Physique Corpusculaire)
