Giant Graviton Correlators as Defect Systems.

We consider correlation functions of two maximal giant gravitons and two light 1/2-BPS (Bogomol'nyi-Prasad-Sommerfield) operators in 4D N=4 SYM (super Yang-Mills). Viewed as two-point correlators in the presence of a zero-dimensional defect, they can be completely fixed at strong coupling using analytic bootstrap techniques. We determine all infinitely such correlators for arbitrary light 1/2-BPS operators and find that the result can be repackaged into a simple generating function thanks to a hidden higher-dimensional symmetry. We also find evidence that the same symmetry holds at weak coupling for loop correction integrands.