Abstract
The level of the text aims at advanced graduate students who have followed an introductory course on quantum field theory, typically leading to QED scattering processes and a few simple one-loop computations therein. The basics of non-abelian quantum field theories are briefly reviewed in chapter one of this book. Here also the basic tools of the modern helicity amplitude approach are provided and some simple tree-level diagrams are computed in the conventional way, using color-ordered Feynman rules.
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Notes
- 1.
Our conventions are summarized in Appendix B.
- 2.
However, differences arise in the large N limit to be discussed below, which of course does not exist for the exceptional groups.
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Henn, J.M., Plefka, J.C. (2014). Introduction and Basics. In: Scattering Amplitudes in Gauge Theories. Lecture Notes in Physics, vol 883. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-54022-6_1
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