Albrecht Klemm (U. Sheffield & U. Bonn) - Black hole scattering, Feynman graph expansions and Calabi-Yau geometries

by Albrecht Klemm (U. Sheffield & U. Bonn)

Monday 8 Jun 2026, 15:00 → 16:00 Europe/Stockholm

92110 (Ångströmlaboratoriet)

Recently Calabi-Yau (CY) periods and their special geometry have been used to solve  the Post-Minkowskian (PM) approximation to black hole scattering in the fifth PM order, i.e. to  very high precision. This approximation uses effective Quantum Field Theory methods and in particular a Feynman graph expansion and Feynman integrals. In this talk we will outline the idea of the PM approximation as well as  the general principles that explain why the period geometry of  CY manifolds and their iterated periods integrals appear in any higher precision approximation to perturbative QFT. We will make a connection to the formalism of topological string theory on families of CY varieties.