Speaker
Vera Paroutiadou
(ETH Zurich)
Description
We revisit the renormalization of generic non-Abelian gauge theories of SU(N) type in the presence of γ₅ within the BMHV scheme. Using algebraic renormalization, we derive the complete structure of one- and two-loop counterterms, including evanescent contributions arising from the non-anticommuting γ₅, and explicitly construct the finite counterterms required to restore BRST symmetry.
As a central outcome, we wish to formulate a general strategy to extend these techniques beyond renormalizable theories. In particular, we outline how the BMHV framework can be systematically applied to effective field theories (EFTs), where higher-dimensional operators and operator mixing amplify the role of evanescent structures and finite counterterms.
Authors
Achillefs Lazopoulos
(ETH Zurich)
Vera Paroutiadou
(ETH Zurich)