04.03.2015 (Wednesday)

High energy scattering in string theory

Regular Seminar Rodolfo Russo (Queen Mary University)

13:15 KCL
room G.01

The study of high energy amplitudes in string theory provides an interesting arena to study several issues in quantum theories of gravity. I will focus on a conceptually very simple situation where a perturbative graviton scatters against a stack of D-branes and I will discuss phenomena, such as the emergence of tidal forces, the restoration of unitarity through resummation of diagrams and how the Regge behaviour of string theory is crucial to avoid causality violations