Some analytic results for two-loop scattering amplitudes

被引：8
作者：
Alday, Luis F. [1 ]
机构：
[1] Inst Adv Study, Sch Nat Sci, Princeton, NJ 08540 USA
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2011年 / 07期
关键词：
Supersymmetric gauge theory; AdS-CFT Correspondence; HEXAGON WILSON LOOP;
D O I：
10.1007/JHEP07(2011)080
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We present analytic results for the finite diagrams contributing to the two-loop eight-point MHV scattering amplitude of planar N = 4 SYM. We use a recently proposed representation for the integrand of the amplitude in terms of (momentum) twistors and focus on a restricted kinematics in which the answer depends only on two independent cross-ratios. The theory of motives can be used to vastly simplify the results, which can be expressed as simple combinations of classical polylogarithms.
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页数：17
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