The thesis (PDF): https://www-h1.desy.de/psfiles/theses/h1th-679.pdf Subscribe to my channel to see more videos like this: null Take the arrow directions on my Feynman diagrams with a grain of salt. Support me with a monthly donation on Patreon and receive a gift from me: https://www.patreon.com/Tibees Buy me a coffee (one-off donation): https://ko-fi.com/tibees Thanks to Ben Davis-Purcell, Sayan Mandal & Gilberto Tetlalmatzi-Xolocotzi for their help with this video. Website: https://tobyhendy.com/ TikTok: https://www.tiktok.com/@tibees Twitter: https://twitter.com/TobyHendy Second channel: https://www.youtube.com/channel/UCOZE5llobz3pjPRP69d0Ejg