Comments on gluon scattering amplitudes via AdS/CFT
Abstract
In this article we consider n gluon color ordered, planar amplitudes in Script N = 4 super Yang Mills at strong 't Hooft coupling. These amplitudes are approximated by classical surfaces in AdS5 space. We compute the value of the amplitude for a particular kinematic configuration for a large number of gluons and find that the result disagrees with a recent guess for the exact value of the amplitude. Our results are still compatible with a possible relation between amplitudes and Wilson loops. In addition, we also give a prescription for computing processes involving local operators and asymptotic states with a fixed number of gluons. As a byproduct, we also obtain a string theory prescription for computing the dual of the ordinary Wilson loop, TrPeiointA, with no couplings to the scalars. We also evaluate the quark-antiquark potential at two loops.
- Publication:
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Journal of High Energy Physics
- Pub Date:
- November 2007
- DOI:
- 10.1088/1126-6708/2007/11/068
- arXiv:
- arXiv:0710.1060
- Bibcode:
- 2007JHEP...11..068A
- Keywords:
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- High Energy Physics - Theory
- E-Print:
- 27 pages, 9 figures,v3:minor corrections