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Dual conformal invariance for form factors
Form factors of the stress-tensor multiplet operator in N=4 supersymmetric Yang-Mills reveal surprisingly simple structures similar to those appearing in scattering amplitudes. In this paper we show that, as for the ...
Form factor recursion relations at loop level
We introduce a prescription to define form factor integrands at loop level in planar N=4 supersymmetric Yang-Mills theory. This relies on a periodic kinematic configuration that has been instrumental to describe form ...