2 papers
math-ph2021
The Master Ward Identity for the complex scalar field
Luis Peters
The Master Ward Identity (MWI) gives a universal formulation of the symmetries of a classical field theory. It is a renormalization condition for the time ordered products of the c…
math-ph2020
The Master Ward Identity for scalar QED
Michael Dütsch, Luis Peters, Karl-Henning Rehren
It is emphasized that for interactions with derivative couplings, the Ward Identity (WI) securing the preservation of a global U(1) symmetry should be modified. Scalar QED is taken…