Speaker
Felix Forner
Description
The self-energies in Quantum Electrodynamics (QED) are not only fundamental physical quantities, but also well-suited for investigating the mathematical structure of perturbative Quantum Field Theory. In this talk, I will discuss the computation of the QED self-energies through differential equations up to the fourth loop order, where increasingly complicated Calabi-Yau geometries appear. In particular, I will consider contributions to the electron self-energy at four loops, involving a Calabi-Yau threefold, and give an overview of some insights, challenges and open questions.
