On the non-planar beta-deformed N=4 super-Yang-Mills theory

Details On the non-planar beta-deformed N=4 super-Yang-Mills theory On the non-planar beta-deformed N=4 super-Yang-Mills theory

2012-01-24

arxiv.org/abs/1201.5012v1

Physics

High Energy Physics

High Energy Physics - Theory

39 pages, 8 figures

Scientific paper

The beta-deformation is one of the two superconformal deformations of the N=4 super-Yang-Mills theory. At the planar level it shares all of its properties except for supersymmetry, which is broken to the minimal amount. The tree-level amplitudes of this theory exhibit new features which depart from the commonly assumed properties of gauge theories with fields in the adjoint representation. We analyze in detail complete one-loop amplitudes and a nonplanar two-loop amplitude of this theory and show that, despite having only N=1 supersymmetry, two-loop amplitudes have a further-improved ultraviolet behavior. This phenomenon is a counterpart of a similar improvement previously observed in the double-trace amplitude of the N=4 super-Yang-Mills theory at three and four loop order and points to the existence of additional structure in both the deformed and undeformed theories.

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