Loop Corrections to Supergravity on AdS5 × S

We consider the four-point correlator of the stress-energy tensor multiplet in N = 4 SYM. In the planar limit and at large ’t Hooft coupling such correlator is given by the corresponding holographic correlation function in IIB supergravity on AdS5 × S. We consider subleading corrections in the number of colours, i.e. order 1/N, at large ’t Hooft coupling. This corresponds to loop corrections to the supergravity result. Consistency conditions, most notably crossing symmetry, constrain the form of such corrections and lead to a complete determination of the spectrum of leading twist intermediate operators.