Some analytic results for two-loop scattering amplitudes

Journal article

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 xpressed as simple combinations of classical polylogarithms. © SISSA 2011.

Authors: Alday, L

• Journal: Journal of High Energy Physics
• Volume: 2011
• Issue: 7
• Publication date: 2011-01-01
• DOI: 10.1007/JHEP07(2011)080
• EISSN: 1029-8479
• ISSN: 1126-6708
• Language: English
• Keywords: AdS-CFT Correspondence; Supersymmetric gauge theory