by
Brando Bellazzini(Institut de Physique Theorique, CEA/Saclay)
→
Europe/Berlin
build. 2a, SR2 (DESY Hamburg)
build. 2a, SR2
DESY Hamburg
Description
Not every effective theory of fields and gravitational interactions at low energy can be embedded into a consistent theory of gravity at short distances. I will discuss how fundamental properties of scattering amplitudes, such as unitarity and causality of the underlying fundamental theory, can be used to spot inconsistent theories of gravity at low-energy, and hence throw them in the so-called ``swampland'’. I will focus on two general applications: the weak gravity conjecture for the physics of extremal black holes; and modified gravity theories of interest for late-time cosmology.
