A wide class of four point functions of BPS operators in N=4 SYM at order g4
Marco D'Alessandro, Luigi Genovese
Abstract
The calculation of a large family of four point functions of general BPS operators in N=4 SYM is reduced to the evaluation of colour contractions. For 1/2 BPS operators OΔthe explicit results at order g4 for the function < On O2 On O2 > are given up to n=6. The OPE of the general result is performed up to the second order in the short distance expansion parameter. Two examples are given, in which the mixing of the operators in the intermediate channel can be resolved using four point functions computed by this method.
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