Speaker
Davide Perrone
(University of Geneva)
Description
I will discuss the construction of an effective field theory for a compact body coupled to gravity, whose key feature is that the dynamics of gravitational perturbations is explicitly determined by known solutions in black hole perturbation theory in four dimensions. In this way the physics of gravitational perturbations in curved space is already encoded in the effective field theory. I will explain how to model a compact body (in particular a black hole) as a spherical shell, whose finite size regulates short-distance divergences in four dimensions and whose tidal responses are described by higher-dimensional operators.
Author
Davide Perrone
(University of Geneva)