论文标题
SAGEX关于散射振幅的评论，第8章：半BPS相关器
The SAGEX Review on Scattering Amplitudes, Chapter 8: Half BPS correlators
论文作者
论文摘要
n = 4个超级阳米尔斯理论中的半bps相关因子在ADS/CFT对应关系以及散射幅度研究中都是关键量。它们在强耦合到量子重力振幅时是双重的。另一方面，在弱耦合下，它们包含所有n = 4个smplududes。已经发现它们具有许多隐藏的对称性，例如扰动四点积分的非平凡置换对称性和较高维度的形成性对称性。自从发现AD/CFT以来，他们的研究一直在不断进步，现在它们是任何四维量子场理论中最广泛的数量。 在这篇综述中，我们概述了当前对半基础bps相关因子的知识，强调了这两个与散射幅度在强和弱耦合下散射幅度的关系。
Half BPS correlators in N=4 super Yang-Mills theory are key quantities both in the AdS/CFT correspondence as well as in scattering amplitudes research. They are dual at strong coupling to quantum gravity amplitudes. At weak coupling on the other hand they contain all N=4 SYM amplitudes. They have been found to possess a number of hidden symmetries, for example non-trivial permutation symmetry of perturbative four-point integrands and a higher dimensional conformal symmetry. Their study has enjoyed continuous progress since the discovery of AdS/CFT and they are now some of the best understood quantities of any four-dimensional quantum field theory. In this review we outline the current knowledge of half BPS correlators, emphasising these two co-existing relations to scattering amplitudes at strong and weak coupling.
