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Infrared behavior of Weyl gravity: Functional renormalization group approach
2020
Physical Review D
Starting from ultraviolet fixed point we study infrared behavior of quantum Weyl gravity in terms of functional RG flow equation. To do so, we employ two classes of Bach-flat backgrounds, namely maximally symmetric spacetimes and Ricci-flat backgrounds in the improved one-loop scheme. We show, that in the absence of matter fields and with a topological term included, the effective action exhibits dynamical breaking of scale symmetry. In particular, it is shown that apart from genuine IR fixed
doi:10.1103/physrevd.101.044050
fatcat:pbbgvqs2afballvx4idzgimcam