Event Details

I will consider a family of geometric invariants known as intersection numbers of twisted cohomology classes, which have been studied by mathematicians since the 80’s. It was recently realized that they have a physical interpretation as tree-level scattering amplitudes of various quantum field theories, including gauge or gravity theory. In this talk I will review how these developments allow us to explain and prove many aspects of scattering amplitudes, such as localization on the moduli space of punctured Riemann surfaces.