Introduction to integrability and one-point functions in N=4 supersymmetric Yang–Mills theory and its defect cousin

Abstract

This chapter gives a basic introduction to N 7equals; 4 SYM theory and the integrability of its planar spectral problem as seen from the perspective of a recent development, namely the AdS/dCFT correspondence and the application of integrability to the study of one-point functions in a defect CFT version of the theory.