Abstract
We show that a certain class of light-like Wilson loops exhibits a Yangian symmetry at one loop, or equivalently, in an Abelian theory. The Wilson loops we discuss are equivalent to one-loop MHV amplitudes in \( \mathcal{N} = 4 \) super Yang-Mills theory in a certain kinematical regime. The fact that we find a Yangian symmetry constraining their functional form can be thought of as the effect of the original conformal symmetry associated to the scattering amplitudes in the \( \mathcal{N} = 4 \) theory.
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Drummond, J.M., Ferro, L. & Ragoucy, E. Yangian symmetry of light-like Wilson loops. J. High Energ. Phys. 2011, 49 (2011). https://doi.org/10.1007/JHEP11(2011)049
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DOI: https://doi.org/10.1007/JHEP11(2011)049