Speaker
Description
Considering the Einstein-Hilbert truncation for the (Euclidean) quantum gravity action, I will mainly focus on the derivation of the Wisonian renormalization group (RG) equations for the Newton and cosmological constant. I will show that particular attention has to be paid to the path integral measure and to a proper introduction of the physical running scale. It will turn out that, differently from other implementations in previous literature, the RG flow of the effective action is not driven by the fourth power of the running scale. This gives rise to a significantly different RG flow. In particular, I will show that there is no sign of the non-trivial UV-attractive fixed point of the so called asymptotic safety scenario. I will also discuss more general aspects related to its RG structure, with particular reference to its effective (or fully fledged) field theory nature.
