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Yangian Symmetry of Scattering Amplitudes and the Dilatation Operator in N = 4 Supersymmetric Yang-Mills Theory
(American Physical Society, 2015-09-30)
It is known that the Yangian of PSU(2,2|4) is a symmetry of the tree-level S matrix of N=4 super Yang-Mills theory. On the other hand, the complete one-loop dilatation operator in the same theory commutes with the level-one ...