78 citations · 191 across the 10 of their papers we have counts for
10 papers
Perturbative QFT: off-shell fields, deformation quantization and causal perturbation theory
Michael Duetsch
Perturbative QFT is developed in terms of off-shell fields (that is, functionals on the configuration space not restricted by any field equation), and by quantizing the (underlying…
Connection between the renormalization groups of Stückelberg-Petermann and Wilson
Michael Duetsch
The Stueckelberg-Petermann renormalization group is the group of finite renormalizations of the S-matrix in the framework of causal perturbation theory. The renormalization group i…
Relating on-shell and off-shell formalism in perturbative quantum field theory
Christian Brouder, Michael Duetsch
In the on-shell formalism (mostly used in perturbative quantum field theory) the entries of the time ordered product T are on-shell fields (i.e. the basic fields satisfy the free f…
Removal of violations of the Master Ward Identity in perturbative QFT
Ferdinand Brennecke, Michael Duetsch
We study the appearance of anomalies of the Master Ward Identity, which is a universal renormalization condition in perturbative QFT. The main insight of the present paper is that…
Proof of perturbative gauge invariance for tree diagrams to all orders
Michael Duetsch
It is proved that classical BRS-invariance of the Lagrangian implies perturbative gauge invariance for tree diagrams to all orders. The proof applies in particular to the Einstein…
Action Ward Identity and the Stueckelberg-Petermann renormalization group
Michael Duetsch, Klaus Fredenhagen
A fresh look at the renormalization group (in the sense of Stueckelberg-Petermann) from the point of view of algebraic quantum field theory is given, and it is shown that a consist…