Dalius Stulga
Speaker affiliation: 
University of Southampton
Tuesday, January 12, 2021 - 12:00
Online (Microsoft Teams)
Renormalization group, asymptotic safety and the f(R) approximation

Renormalization group (RG) is dubbed one of the most important advances in theoretical physics in the past 50 years. In this talk I will lay out the basic picture of RG and introduce its general framework - functional renormalization group equations (FRGE). I will discuss how this is used to study the flow equations of quantum gravity using common approximation techniques. Finally, I will talk about the significance of cut-off choices and what these imply for fixed point solutions.