Speaker
Benjamin Knorr
(Heidelberg University)
Description
I discuss a simple model in which a scattering amplitude can be computed analytically, based on an asymptotically safe fixed point. I will present the analytical structure of the amplitude, and a potential realisation of the no global symmetries conjecture previously thought to be incompatible with asymptotic safety. A key feature of the amplitude is the appearance of gravitational logarithms, which are large in purely massless theories, but can potentially be tamed in massive theories as long as there is a scale separation of the mass and the Planck scale.
Author
Benjamin Knorr
(Heidelberg University)
