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What Can We Learn About QCD and Collider Physics from N=4 Super Yang–Mills?
Annual Review of Nuclear and Particle Science ( IF 9.1 ) Pub Date : 2021-09-21 , DOI: 10.1146/annurev-nucl-102819-100428
Johannes M. Henn 1
Affiliation  

Tremendous ongoing theory efforts are dedicated to developing new methods for quantum chromodynamics (QCD) calculations. Qualitative rather than incremental advances are needed to fully exploit data that are still to be collected at the LHC. The maximally supersymmetric Yang–Mills theory, super Yang–Mills (sYM), shares with QCD the gluon sector, which contains the most complicated Feynman graphs but also has many special properties and is believed to be solvable exactly. It is natural to ask what we can learn from advances in sYM for addressing difficult problems in QCD. With this in mind, I review several remarkable developments and highlights of recent results in sYM. This includes all-order results for certain scattering amplitudes, novel symmetries, surprising geometrical structures of loop integrands, novel tools for the calculation of Feynman integrals, and bootstrap methods. While several insights and tools have already been carried over to QCD and have contributed to state-of-the-art calculations for LHC physics, I argue that there is a host of further fascinating ideas waiting to be explored.

中文翻译:


我们可以从 N=4 Super Yang–Mills 中学到什么关于 QCD 和对撞机物理学?

大量正在进行的理论工作致力于开发量子色动力学 (QCD) 计算的新方法。需要定性而不是渐进式的进步来充分利用 LHC 仍要收集的数据。最大超对称杨米尔斯理论,超级杨米尔斯 (sYM) 与 QCD 共享胶子扇区,该扇区包含最复杂的费曼图,但也具有许多特殊性质,并且被认为是可精确解的。很自然地会问我们可以从先进的技术中学到什么sYM 用于解决 QCD 中的难题。考虑到这一点,我回顾了几个显着的发展和近期成果的亮点SYM。这包括某些散射幅度的全阶结果、新的对称性、令人惊讶的环路被积函数几何结构、用于计算费曼积分的新工具和自举方法。虽然一些见解和工具已经转移到 QCD 并为 LHC 物理学的最先进计算做出了贡献,但我认为还有许多更有趣的想法有待探索。

更新日期:2021-09-22
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