Speaker
Description
I will discuss how the Renormalization Group (RG) flow of a surprisingly complete effective field theory (EFT) of nature opens up an opportunity for quantitative quantum-gravity phenomenology. With this goal in mind, my talk reviews phenomenological consistency constraints in (i) cosmology, (ii) particle physics, and (iii) black-hole astronomy. Taken together, these provide a highly nontrivial test for any predictive quantum-gravity scenario.
Focusing on the asymptotic safety programme, I will highlight that the existence of an interacting fixed point of the RG flow places nontrivial bounds on the global RG flow in the EFT of nature. If asymptotic safety is regarded as fundamental, this implies enhanced predictive power. Even if asymptotic safety is regarded only as effective, boundary surfaces in the global RG flow impact phenomenological consistency.
