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We confirm by explicit computation the conjectured all-orders iteration ofplanar maximally supersymmetric N=4 Yang-Mills theory in the nontrivial case offive-point two-loop amplitudes. We compute the required unitarity cuts of theintegrand and evaluate the resulting integrals numerically using aMellin--Barnes representation and the automated package of ref.~[1]. Thisconfirmation of the iteration relation provides further evidence suggestingthat N=4 gauge theory is solvable.Comment: 4 pages, 3 figure

physical review letters

Two-Loop Iteration of Five-Point<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="script">N</mml:mi><mml:mo>=</mml:mo><mml:mn>4</mml:mn></mml:math>Super-Yang-Mills Amplitudes

Two-Loop Iteration of Five-PointN=4Super-Yang-Mills Amplitudes