Speaker
Prof.
Stefan Floerchinger
(University of Jena)
Description
Functional renormalization group flow equations can be constructed to be ultraviolet finite but break reflection positivity / unitarity, or vice versa. We explore how this problem can be circumvented with flow equations of second or higher order. They respect unitarity and are ultraviolet finite, but their solution leaves certain integration constants open. We discuss the physical significance of the latter. What emerges thus is a new functional RG scheme, that can be applied advantageously for addressing many questions concerning the dynamics of quantum field theories.
| Affiliation | Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena, Germany |
|---|---|
| Career status | Senior |
Author
Prof.
Stefan Floerchinger
(University of Jena)