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arXiv · hep-th/0408233

Gauge Theory Amplitudes, Scalar Graphs and Twistor Space

Valentin V. Khoze
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Abstract

We discuss a remarkable new approach initiated by Cachazo, Svrcek and Witten for calculating gauge theory amplitudes. The formalism amounts to an effective scalar perturbation theory which in many cases offers a much simpler alternative to the usual Feynman diagrams for deriving $n$-point amplitudes in gauge theory. At tree level the formalism works in a generic gauge theory, with or without supersymmetry, and for a finite number of colours. There is also a growing evidence that the formalism works for loop amplitudes.

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Valentin V. Khoze. 2004-09-07. Gauge Theory Amplitudes, Scalar Graphs and Twistor Space. https://doi.org/10.1142/9789812702326_0042

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