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Far Beyond the Planar Limit in Strongly-Coupled $\mathcal{N}=4$ SYM

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arxiv 2003.08412 v2 pith:RFR7YD2E submitted 2020-03-18 hep-th

Shai M. Chester , Silviu S. Pufu This is my paper · ORCID
classification hep-th
keywords partialtheorybeyondcouplingderivativedetermineenergyexact
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

When the $SU(N)$ ${\cal N} = 4$ super-Yang-Mills (SYM) theory with complexified gauge coupling $\tau$ is placed on a round four-sphere and deformed by an ${\cal N} = 2$-preserving mass parameter $m$, its free energy $F(m, \tau, \bar \tau)$ can be computed exactly using supersymmetric localization. In this work, we derive a new exact relation between the fourth derivative $\partial_m^4 F(m, \tau, \bar \tau) \big|_{m=0}$ of the sphere free energy and the integrated stress-tensor multiplet four-point function in the $\mathcal{N}=4$ SYM theory. We then apply this exact relation, along with various other constraints derived in previous work (coming from analytic bootstrap, the mixed derivative $\partial_\tau \partial_{\bar \tau} \partial_m^2 F(m, \tau, \bar \tau) \big|_{m=0}$, and type IIB superstring theory scattering amplitudes) to determine various perturbative terms in the large $N$ and large 't Hooft coupling $\lambda$ expansion of the ${\cal N} = 4$ SYM correlator at separated points. In particular, we determine the leading large-$\lambda$ term in the ${\cal N} = 4$ SYM correlation function at order $1/N^8$. This is three orders beyond the planar limit.

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