In this paper, we study the physical effects of deforming the usual Einstein-Hilbert lagrangian with the Goroff-Sagnotti counterterm (the first which is nonvanishing on shell). Only spherically symmetric solutions are discussed. The facts that Schwarzschild's spacetime is not a solution to the corresponding equations of motion and Birkhoff's theorem validity are analyzed and some consequences worked out.
No takes yet. Share an insight, caveat, or question.
Álvarez et al. (2023) studied this question.