Speaker: Didina Serban

Title: Correlation functions in integrable supersymmetric four-dimensional gauge theories

Abstract: The talk will start with a reminder of the method of hexagonalization for the correlators of gauge-invariant operators in the N=4 SYM theory and the computation of the octagon form factor in terms of a Fredholm determinant for a Bessel kernel. Then I will present an application of this method to compute three point functions of the twisted BPS operators for the N=2 supersymmetric cyclic Z_K quiver theories. The result, expressed in terms of the octagon form factor, agrees with the computations previously performed by localisation.