• a lot of interesting maths studied for analytic
• semi-numeric result (deep expansions) now available [Fael, Lange, Schönwald, Steinhauser 2022] [Egner, Fael, Lange, Schönwald, Steinhauser 2022] [Fael, Lange, Schönwald, Steinhauser 2022] [Fael, Lange, Schönwald, Steinhauser 2023]
• fast implementation using Chebyshev expansions
• see Fabian’s talk
• Q: how to convert schemes / develop massification at three-loop