An introduction to on-shell recursion relations
作者： Bo Feng , Mingxing Luo
DOI: 10.1007/S11467-012-0270-Z
关键词:
摘要: This article provides an introduction to on-shell recursion relations for calculations of tree-level amplitudes. Starting with the basics, such as spinor notations and color decompositions, we expose analytic properties gauge-boson amplitudes, BCFW-deformations, large z-behavior gluons. We discuss further developments relations, including generalization other quantum field theories, supersymmetric theories in particular, off-shell currents, relation nonzero boundary contributions, bonus rational parts one-loop 3D a proof CSW rules. Finally, present samples applications, solutions split helicity amplitudes N = 4 SYM consequences consistent conditions under relation, Kleiss-Kuijf (KK) Bern-Carrasco-Johansson (BCJ) color-ordered gluon tree Kawai-Lewellen-Tye (KLT) relations.
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