Some analytic results for two-loop scattering amplitudes
High Energy Physics - Theory
2011-07-21 v2
Abstract
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.
Cite
@article{arxiv.1009.1110,
title = {Some analytic results for two-loop scattering amplitudes},
author = {Luis F. Alday},
journal= {arXiv preprint arXiv:1009.1110},
year = {2011}
}
Comments
18 pages