Amplitudes in the beta-deformed Conformal Yang-Mills

Details Amplitudes in the beta-deformed Conformal Yang-Mills Amplitudes in the beta-deformed Conformal Yang-Mills

2005-12-15

arxiv.org/abs/hep-th/0512194v2

JHEP0602:040,2006

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, 12 figures, v2: Comments and references added

Scientific paper

10.1088/1126-6708/2006/02/040

We study perturbative amplitudes in a large class of theories obtained by marginal deformations of the N=4 supersymmetric Yang-Mills. We find that planar amplitudes in the deformed theories are closely related to planar amplitudes in the original N=4 SYM. For some classes of deformations the amplitudes essentially coincide with the N=4 amplitudes to all orders in planar perturbation theory. For more general classes of marginal deformations, the equivalence holds at up to four loops, and at five loops it is likely to break down. This implies that the iterative structure of planar MHV amplitudes recently discovered by Bern, Dixon and Smirnov in hep-th/0505205 for the N=4 theory also manifests itself in a wider class of theories.

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