3 papers
hep-th2025
Regulator and gauge dependence of the Abelian gauge coupling in asymptotically safe quantum gravity
Maksym Riabokon, Marc Schiffer, Fabian Wagner
Both General Relativity and the Standard Model of particle physics are not UV complete. General Relativity is perturbatively non-renormalizable, while the Standard Model features L…
gr-qc2025
Indications against dynamical CPT symmetry restoration in quantum gravity
Astrid Eichhorn, Marc Schiffer
CPT symmetry is at the heart of the Standard Model of particle physics and experimentally very well tested, but expected to be broken in some approaches to quantum gravity. It thus…
hep-th2024
Application of positivity bounds in asymptotically safe gravity
Astrid Eichhorn, Andreas Odgaard Pedersen, Marc Schiffer
Positivity bounds are bounds on the Wilson coefficients of an effective field theory. They hold, if the ultraviolet completion satisfies unitarity, microcausality, locality and Lor…