近些年散射振幅的研究表明,存在不同于传统费曼图的更有效的方式来理解量子场论和量子引力。其中重要的核心思想包括在壳性方法、bootstrap方法,以及一些新的对称性的应用。这些新思路可以发展应用于更一般的含有算符的形状因子等物理量,帮助研究算符分类和重整化、有效场论振幅计算、以及色动量对偶和平方关系等。在这一报告中,我们将介绍形状因子研究的一些新进展及其应用。
We outline a new technique for the fully-differential matching of final-state parton showers to NNLO calculations, focussing here on the simplest case of leptonic collisions with two final-state jets. The strategy is facilitated by working in the antenna formalism, making use of NNLO antenna subtraction on the fixed-order side and the sector-antenna framework on the shower side. As long as the...
In this talk, I will discuss the renormalization of an axial current associated with a given quark flavor, and the closely related renormalization formulae of the singlet contribution to an axial quark form factor, as well as the renormalization group equations which are used to resum the non-decoupling mass logarithms appearing in the axial quark form factors.
Review on progress in scattering amplitudes and integral reduction
Multi-point energy correlation in N=4 Super Yang-Mills Theory