Gravitational Positivity Bounds and Their Implications
Toshifumi Noumi(Kobe University)
Positivity bounds on low-energy scattering amplitudes provide a criterion for a low-energy effective theory to have a standard UV completion. When applied to gravitational theories, they are expected to imply non-trivial quantum gravity constraints on quantum field theory models, i.e., swampland conditions. In this talk I will introduce recent developments on positivity bounds in gravitational theories and their implications, e.g., for the Standard Model of particle physics.