Status of the asymptotic safety paradigm for quantum gravity and matter

Abstract

In the asymptotic safety paradigm, a quantum field theory reaches a regime with quantum scale invariance in the ultraviolet, which is described by an interacting fixed point of the Renormalization Group. Compelling hints for the viability of asymptotic safety in quantum gravity exist, mainly obtained from applications of the functional Renormalization Group. The impact of asymptotically safe quantum fluctuations of gravity at and beyond the Planck scale could at the same time induce an ultraviolet completion for the Standard Model of particle physics with high predictive power.

Comments: 21 pages; extended version of a talk given at the workshop on Black Holes, Gravitational Waves and Spacetime Singularities, May 2017, Specola Vaticana; prepared for the proceedings of the workshop