Henry Kißler (HU Berlin)
Last term, Alfonso and Pierre have been talking about gauge theories and I'd like to add some aspects about renormalization to the discussion. Due to quantisation, singular integrals arise; curing these singularities goes under the name renormalization.
After surveying some classical concepts, I'll introduce a diagrammatic approach that allows to derive diagrammatic identities that imply necessary conditions for the renormalization process. Also I'll comment on potential generalisations as well its
relation to BRST cohomlogy.
Meeting ID: 498 775 1829