论文标题
$ n $的引导乳头
Bootstrapping Pions at Large $N$
论文作者
论文摘要
我们从现代的引导性角度重新审视了以$ n $限制解决QCD的长期问题。我们通过施加从$ 2 \ 2 $散射的全部阳性约束来得出了无数质子式式式倾斜的有效场理论的普遍界限。我们排除图的某些特征与Hadronic现象学具有有趣的联系。排除边界表现出尖锐的扭结，提高了大型$ n $ QCD可能位于此扭结的诱人场景。我们对这种可能性进行了严格的研究，在此过程中发展了对边界几何形状的部分分析理解。
We revisit from a modern bootstrap perspective the longstanding problem of solving QCD in the large $N$ limit. We derive universal bounds on the effective field theory of massless pions by imposing the full set of positivity constraints that follow from $2 \to 2$ scattering. Some features of our exclusion plots have intriguing connections with hadronic phenomenology. The exclusion boundary exhibits a sharp kink, raising the tantalizing scenario that large $N$ QCD may sit at this kink. We critically examine this possibility, developing in the process a partial analytic understanding of the geometry of the bounds.
