2023/05/15 by Zvi Bern, Bern, Zvi, Enrico Herrmann +11
Physics and Astronomy · #Quantum Chromodynamics and Particle Interactions #Atomic and Molecular Physics #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.2305.08981
We compute the potential-photon contributions to the classical relativistic scattering angle of two charged non-spinning bodies in electrodynamics through fifth order in the coupling. We use the scattering amplitudes framework, effective field theory, and multi-loop integration techniques based on integration by parts and differential equations. At fifth order, the result is expressed in terms of cyclotomic polylogarithms. Our calculation demonstrates the feasibility of the corresponding calculations in general relativity, including the evaluation of the encountered four-loop integrals.