Speaker
Marc Schiffer
(Heidelberg University)
Description
After a short introduction to asymptotically safe quantum gravity, I explore the question why our universe is four dimensional from an asymptotically safe vantage point.
I present indications that asymptotically safe quantum fluctuations of gravity could only solve the $U(1)$ Landau-pole problem in the Standard Model in four dimensions. This could single out the observed dimensionality of the universe, once the requirement of a minimalistic description of the microscopic building blocks of our universe in terms of Standard Model fields together with a quantum-field theoretic description of quantum gravity is made.
Based on **Phys.Lett. B793 (2019) 383-389**.
Primary authors
Astrid Eichhorn
(CP3-Origins, University of Southern Denmark)
Marc Schiffer
(Heidelberg University)
