159 citations · 1.6k across the 29 of their papers we have counts for
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Form Factors in Asymptotically Safe Quantum Gravity
Benjamin Knorr, Chris Ripken, Frank Saueressig
Asymptotic Safety implies that observables including scattering amplitudes remain finite at the highest energy scales. Traditionally, this feature is connected to an interacting fi…
Configuration space for quantum gravity in a locally regularized path integral
Benjamin Knorr, Alessia Platania, Marc Schiffer
We discuss some aspects of the metric configuration space in quantum gravity in the background field formalism. We give a necessary and sufficient condition for the parameterizatio…
Cartographing gravity-mediated scattering amplitudes: scalars and photons
Benjamin Knorr, Samuel Pirlo, Chris Ripken +1
The effective action includes all quantum corrections arising in a given quantum field theory. Thus it serves as a powerful generating functional from which quantum-corrected scatt…
Safe essential scalar-tensor theories
Benjamin Knorr
We discuss the renormalisation group flow of all essential couplings of quantum gravity coupled to a shift-symmetric scalar field at fourth order in the derivative expansion. We de…
Sifting quantum black holes through the principle of least action
Benjamin Knorr, Alessia Platania
We tackle the question of whether regular black holes or other alternatives to the Schwarzschild solution can arise from an action principle in quantum gravity. Focusing on an asym…