Energy-energy correlators in the large-charge limit of $\mathcal{N}=4$ super Yang-Mills theory

We study the energy-energy correlator (EEC) in heavy states of four-dimensional $\mathcal{N}=4$ super Yang–Mills theory in the large-charge 't Hooft limit, in which the dimension $\mathrm{\Delta }$ of the heavy operator (or, equivalently, its $R$-charge) is taken to infinity with the effective coupling ${\lambda }_Q\propto g_{\mathrm{Y}\mathrm{M}}^2\mathrm{\Delta }$ held fixed. The relevant heavy-heavy-light-light four-point correlators are known to all orders in ${\lambda }_Q$ in this limit. For certain classes of operators, the perturbative series can be resummed to obtain exact finite-coupling expressions. We use these results to determine the corresponding EEC, whose dynamical part can be extracted from a double discontinuity of the four-point correlator. We determine the EEC at finite effective coupling and study its physical behavior as a function of ${\lambda }_Q$ and the angular separation between the detectors, both at generic angles and in the collinear and back-to-back limits.