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arXiv · 1301.0149

Higher loop mixed correlators in N=4 SYM

Luis F. Alday·Johannes M. Henn·Jakub Sikorowski
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Abstract

We compute analytically the two-loop contribution to the correlation function of the Lagrangian with a four-sided light-like (or null) Wilson loop in N=4 super Yang-Mills. As a non-trivial test of our result, we reproduce the three-loop value of the cusp anomalous dimension upon integration over the insertion point of the Lagrangian. The method we used involved calculating a dual scattering amplitude. Moreover, we give a simple representation of the loop integrand of the latter in twistor variables.

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Luis F. Alday, Johannes M. Henn, Jakub Sikorowski. 2013-01-02. Higher loop mixed correlators in N=4 SYM. https://doi.org/10.1007/jhep03(2013)058

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