Unimodular quantum gravity: Steps beyond perturbation theory

Understand

The renormalization group flow of unimodular quantum gravity is computed by taking into account the graviton and Faddeev-Popov ghosts anomalous dimensions.

• In this setting, a ultraviolet attractive fixed point is found.
• Symmetry-breaking terms induced by the coarse-graining procedure are introduced and their impact on the flow is analyzed.
• A discussion on the equivalence of unimodular quantum gravity and standard full diffeomorphism invariant theories is provided beyond perturbation theory.