String Theory Journal Club

Studying the symmetries of asymptotically flat spacetimes is a very interesting problem which can be tackled from different perspectives, one of which are soft theorems. They are low-energy theorems of the scattering process in flat spacetimes and are equivalent to the Ward identities of asymptotic symmetries preserving the asymptotic structure at null infinity. In this talk I will give an overview of this relationship and discuss the w-algebra discovered by Stominger et al. in the soft sector of gravitational theories from the collinear limit of graviton amplitudes. Finally, I will comment on the antisymmetric double soft graviton theorems and talk about their implications for the w-algebra.