Proefschrift
Advances in computational methods for Quantum Field Theory calculations
In this work we describe three methods to improve the performance of Quantum Field Theory calculations.
- Auteur
- Ruijl, B.J.G.
- Datum
- 02 november 2017
- Links
- Thesis in Leiden Repository
![](/binaries/content/gallery/ul2/main-images/science/proefschriften/cover_ruijl-2.jpg/cover_ruijl-2.jpg/d300xvar)
In this work we describe three methods to improve the performance of Quantum Field Theory calculations. First, we simplify large expressions to speed up numerical integrations. Second, we design Forcer, a program for the reduction of four-loop massless propagator integrals. Third, we extend the R* method to quickly compute the poles of Feynman integrals. With these methods, we compute several four-loop splitting functions and the five-loop beta function for Yang-Mills theory with fermions.