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Nonperturbative enhancement of superloop at strong coupling

机译:强耦合时超环的无扰动增强

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摘要

We address the near-collinear expansion of NMHV six-particle scattering amplitudes at strong value of the '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 m h which is exponentially suppressed in the 't Hooft coupling, their exchanges must be resummed in the ultraviolet limit, τ ? 1 / m h . 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.
机译:在平面最大超对称Yang-Mills理论中,我们以't Hooft耦合的强值解决了NMHV六粒子散射振幅的近共线扩展。我们通过研究超大规模威尔逊循环的五角大楼算子乘积扩展的上下文,通过研究伴随(或不伴随)大量通量管激励的多个标量交换的影响,来补充对这一可观察性的最新研究。由于空穴具有很小的,无扰动产生的质量m h的事实,该质量在't Hooft偶合中被指数抑制,因此必须在紫外线极限τ?中恢复它们的交换。 1 /时该过程对超环的期望值做出了贡献,该超环的期望值与经典区域相等,这是较早在MHV振幅中观察到的现象。在所有组件中,近乎无量纲的标量交换都是从大质量粒子中分解出来的,并以强耦合的先导顺序分解。

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