Nonperturbative enhancement of superloop at strong coupling

Abstract

We address the near-collinear expansion of NMHV six-particle scattering amplitudes at strong value of 't Hooft coupling in planar maximally supersymmetric Yang-Mills theory. We complement recent studies of this observable within the context of the Pentagon Operator Product Expansion, via the dual superWilson loop description, by studying effects of multiple scalar exchanges that accompany (or not) massive flux-tube excitations. Due to the fact that holes have a very small, nonperturbatively generated mass which is exponentially suppressed in 't Hooft coupling, their exchanges must be resummed in the ultraviolet limit. This procedure yields a contribution to the expectation value of the superloop which enters on equal footing with the classical area, --- a phenomenon which was earlier observed for MHV amplitudes. In all components, the near-massless scalar exchanges factorize from the ones of massive particles, at leading order in strong coupling.

22 pages, 2 figures

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Cited by in corpus (13)

• Matrix pentagons
• Conical Twist Fields and Null Polygonal Wilson Loops
• The contribution of scalars to $\mathcal{N}=4$ SYM amplitudes
• Towards NMHV amplitudes at strong coupling
• Fermions and scalars in $\mathcal{N}=4$ Wilson loops at strong coupling and beyond
• The contribution of scalars to $\mathcal{N}=4$ SYM amplitudes II: Young tableaux, asymptotic factorisation and strong coupling
• Resummed tree heptagon
• Supersymmetric quantum mechanics of the flux tube
• Vacuum expectation value of twist fields
• Twisting perturbed parafermions
• Spectral determinants for twist field correlators
• $\mathcal{N}=4$ polygonal Wilson loops: fermions
• A Young diagram expansion of the hexagonal Wilson loop (amplitude) in $\mathcal{N}=4$ SYM