OPE and Wilson loops for form factors of local operators
I will discuss recent progress at computing form factors of local operators in planar N=4 SYM using the duality with null periodic Wilson loops and integrability. I will first recall the original duality for the form factors of the stress-energy tensor and motivate a generalisation to the form factors of all single-trace half-BPS operators. I will then explain how the dual Wilson loops may be studied exactly in the collinear limit using the Operator Product Expansion and integrability, and present applications to higher-loop calculations of the three-point form factors. If time permits, I will discuss preliminary results for constructing Wilson loops dual to form factors of non-protected operators, and more specifically for operators in the Konishi supermultiplet.