Tree-level amplitudes and dual superconformal symmetry

Details Tree-level amplitudes and dual superconformal symmetry Tree-level amplitudes and dual superconformal symmetry

2011-07-22

arxiv.org/abs/1107.4544v1

Physics

High Energy Physics

High Energy Physics - Theory

24 pages, 6 figures

Scientific paper

We review the structure of gauge theory scattering amplitudes at tree level and describe how a compact expression can be found which encodes all the tree-level amplitudes in the maximally supersymmetric N=4 theory. The expressions for the amplitudes reveal a dual superconformal symmetry. We describe how these ideas can be extended to leading singularities and the loop integrand in the planar theory and discuss the appearance of dual conformal symmetry in higher-dimensional gauge theories. This article is an invited review for a special issue of Journal of Physics A devoted to "Scattering Amplitudes in Gauge Theories".

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