Speaker
Maximilian Becker
(Radboud University, Nijmegen)
Description
The renormalization of composite operators in the Asymptotic Safety scenario is instructive from two points of view, which is due to two different interpretations of their anomalous dimensions. These can be interpreted either as corrections to the actual geometric scaling dimensions of a set of operators, or as approximations of the critical exponents characterizing the Reuter fixed point(s) in theory space. The former interpretation is in particular relevant for the construction of observables, while the latter caters to the heart of the Asymptotic Safety program itself. In this talk, I will introduce the composite-operator method and present in more detail recent developments in the latter avenue of research.
