Ponente
Descripción
Feynman integrals are ubiquitous in any calculation in perturbative quantum field theory. Their calculation is a crucial ingredient in computing loop amplitudes, which allow us to increase the precision of theoretical predictions for physical processes ranging from collider experiments to gravitational waves measurements. I will give an overview of some modern techniques used in the calculation of Feynman integrals, focusing on cases with many external legs. I will explain how Feynman integrals form vector spaces, and how this can be used to simplify their calculation by targeting a basis of this space. Finally, I will show how a better understanding of the analytic structure of the functions appearing in the evaluation of Feynman integrals can lead to more efficient ways to compute them.
