Speaker
Benjamin Knorr
Description
Scattering amplitudes are a key tool of modern quantum field theories, them being used for a wide range of applications, from collider experiments all the way to gravitational waves. In a gravitational context, they showcase the perturbative non-renormalisability of General Relativity: they grow unboundedly at high energies, violating standard unitarity bounds. Any putative quantum gravity theory has to resolve this issue.
After a discussion of some general aspects of scattering amplitudes in QFT, I will present some recent advances within Asymptotic Safety to derive non-perturbative gravitational scattering amplitudes from first principles.
