Speaker
Description
Generalized quasi-topological gravities (GQTGs) are higher-curvature extensions of Einstein gravity characterized by the existence of non-hairy generalizations of the Schwarzschild black hole which satisfy g_{tt} g_{rr} = −1, as well as for having second-order linearized equations around maximally symmetric backgrounds. In this talk I will provide strong evidence that any gravitational effective action involving higher-curvature corrections is equivalent, via metric redefinitions, to some GQTG. This suggests that the physics of generic higher-curvature gravity black holes is captured by their GQTG counterparts, dramatically easier to characterize and universal. The talk is based in the preprint https://arxiv.org/abs/1906.00987 (already accepted in JHEP).
