Bootstrapping mixed correlators in N=4 super Yang-Mills

We perform a numerical bootstrap study of the mixed correlator system containing the half-BPS operators of dimension two and three in N = 4 Super Yang-Mills. This setup improves on previous works in the literature that only considered single correlators of one or the other operator. We obtain upper bounds on the leading twist in a given representation of the R-symmetry by imposing gaps on the twist of all operators rather than the dimension of a single one. As a result we find a tension between the large N supergravity predictions and the numerical finite N results already at N similar to 100. A few possible solutions are discussed: the extremal spectrum suggests that at large but finite N, in addition to the double trace operators, there exists a second tower of states with smaller dimension. We also obtain new bounds on the dimension of operators which were not accessible with a single correlator setup. Finally we consider bounds on the OPE coefficients of various operators. The results obtained for the OPE coefficient of the lightest scalar singlet show evidences of a two dimensional conformal manifold.

Automated summary

In this study, a numerical bootstrap analysis of the mixed correlator system in N = 4 Super Yang-Mills theory reveals new bounds on operator dimensions and OPE coefficients. The tension between large N supergravity predictions and numerical finite N results is found to exist around N similar to 100, prompting discussions on potential solutions. Additionally, evidence of a two dimensional conformal manifold in the OPE coefficient of the lightest scalar singlet is observed.