Abstract:

In the formulation of the effective approach to quantum gravity (QG), the main application is, traditionally, the QG corrections to Newton’s potential. We purpose of this talk is to present strong arguments of why Einstein’s gravity should be a universal theory of low-energy(IR) QG. On top of that, the consistent derivation of the gaugeand parametrization-independent QG contributions to Newton’s potential are described. Since Einstein’s gravity has only massless degrees of freedom, it remains relevant in the deep IR, while the contributions of all the massive degrees of freedom, coming from higher derivative terms, are decoupled, even if their origins are the Feynman diagrams with mixed (heavy and light) internal lines. An important detail is the recent confirmation of this decoupling on the simplified scalar model that possesses the main features of higher derivative QG.