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Nonrenormalization of next-to-extremal correlators in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="script">N</mml:mi><mml:mo>=</mml:mo><mml:mn>4</mml:mn><mml:mn /></mml:math>super Yang-Mills theory and the AdS/CFT correspondence
We show that next-to-extremal correlators of chiral primary operators in $\mathcal{N}=4$ SYM theory do not receive quantum corrections to first order in perturbation theory. Furthermore, we consider next-to-extremal correlators within AdS supergravity. Here the exchange diagrams contributing to these correlators yield results of the same free-field form as obtained within …