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Form Factors in N=4 Super Yang-Mills and Periodic Wilson Loops
Andreas Brandhuber, Bill Spence, Gabriele Travaglini +1
We calculate form factors of half-BPS operators in N=4 super Yang-Mills theory at tree level and one loop using novel applications of recursion relations and unitarity. In particul…
One-loop Amplitudes in Six-Dimensional (1,1) Theories from Generalised Unitarity
Andreas Brandhuber, Dimitrios Korres, Daniel Koschade +1
Recently, the spinor helicity formalism and on-shell superspace were developed for six-dimensional gauge theories with (1,1) supersymmetry. We combine these two techniques with (ge…
A Note on Dual MHV Diagrams in N=4 SYM
Andreas Brandhuber, Bill Spence, Gabriele Travaglini +1
Recently a reformulation of the MHV diagram method in N=4 supersymmetric Yang-Mills theory in momentum twistor space was presented and was shown to be equivalent to the perturbativ…
A Surprise in the Amplitude/Wilson Loop Duality
Andreas Brandhuber, Paul Heslop, Panagiotis Katsaroumpas +4
One of the many remarkable features of MHV scattering amplitudes is their conjectured equality to lightlike polygon Wilson loops, which apparently holds at all orders in perturbati…