Thibaut Varin (Villeurbanne):

Effective chiral theories and new regularization scheme preserving symmetries

Abstract:

In this talk, I will describe a new cut-off regularization procedure which respects symmetries. In particular, I show how to generate logarithmic and quadratic divergences correctly in order to satisfy symmetry requirements. Then I will apply this prescription to the Ward identities of QED, a five dimensional abelian gauge theory and a phenomenological chiral model.