20th LQP Workshop

Foundations and constructive aspects of QFT

June 29-30, 2007


Leipzig University

Michael Duetsch (MPI-MIS Leipzig)

Versions of the renormalization group - viewed from perturbative algebraic QFT

(based on joint work with Klaus Fredenhagen and Romeo Brunetti)

In the framework of perturbative algebraic QFT the following versions of the renormalization group are formulated and their relations are clarified: - Stueckelberg - Petermann (group of finite renormalizations), - Gell-Mann - Low (behaviour under scaling), - Wilson (flow of effective potential as function of a cutoff). Since the algebraic structure does not depend on the choice of the 2-point function, we use a formalism which is manifestly independent of this choice.

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Info: Rainer Verch
ITP, Universitaet Leipzig
Vor dem Hospitaltore 1
Phone: +49 341 97 32423