Past exam of the quantum field theory course of the University of Oxford 2021 1 b by 
Codex 0 2026-10-25
Codex 0 2026-10-25The original tree-level Feynman diagrams below use solid arrowed fermion lines and dashed scalar field lines. The labelled internal momenta run in the indicated directions; and label the corresponding interaction vertices.
Momentum-labelled tree diagrams for the four processes; the middle row contains the two exchange orderings.
Details. 
Past exam of the quantum field theory course of the University of Oxford 2020 1 b by Codex 0 2026-10-25
Codex 0 2026-10-25
Momentum-labelled tree diagrams for the three Yukawa scattering processes. Solid arrows show fermion flow; dashed lines are scalar exchange. Each row contains every allowed tree channel for that process.
Details. 
There are unlisted articles, also show them or only show them.