Minimal surfaces in AdS and the eight-gluon scattering amplitude at strong coupling

Details Minimal surfaces in AdS and the eight-gluon scattering amplitude at strong coupling Minimal surfaces in AdS and the eight-gluon scattering amplitude at strong coupling

2009-03-26

arxiv.org/abs/0903.4707v2

Physics

High Energy Physics

High Energy Physics - Theory

9 pages

Scientific paper

In this note we consider minimal surfaces in three dimensional anti-de Sitter space that end at the AdS boundary on a polygon given by a sequence of null segments. The problem can be reduced to a certain generalized Sinh-Gordon equation and to SU(2) Hitchin equations. The mathematical problem to be solved arises also in the context of the moduli space of certain three dimensional supersymmetric theories. We can use explicit results available in the literature in order to find the explicit answer for the area of a surface that ends on a eight-sided null Wilson loop. Via the gauge/gravity duality this can also be interpreted as a certain eight-gluon scattering amplitude at strong coupling for a special kinematic configuration.

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