3-Point functions of universal scalars in maximal SCFTs at large N

We compute all 3-point functions of the “universal” scalar operators contained in the interacting, maximally supersymmetric CFTs at large N by using the AdS/CFT cor- respondence. These SCFTs are related to the low energy description of M5, M2 and D3 branes, and the common set of universal scalars corresponds through the AdS/CFT relation to the fluctuations of the metric and the magnetic potential along the internal manifold. For the interacting (0, 2) SCFT6 at large N , which is related to M5 branes, this set of scalars is complete, while additional non-universal scalar operators are present in the d = 4, N = 4 super Yang–Mills theory and in the N = 8 SCFT3, related to D3 and M2 branes, respectively.