论文标题
双重减法
Dual Subtractions
论文作者
论文摘要
我们提出了一种新的局部减法方案，用于计算扰动量子场理论中散射过程的近级领先顺序贡献。关于自多年以来提出的众所周知的方案，建立在对真实辐射矩阵元素的分析基础上，我们的构造从环图开始并利用其环形树二表示。我们的方案实现了精确的相空间分解，处理最终状态和初始状态奇点，并且适合于无质量和质量颗粒。
We propose a novel local subtraction scheme for the computation of Next-to-Leading Order contributions to theoretical predictions for scattering processes in perturbative Quantum Field Theory. With respect to well known schemes proposed since many years that build upon the analysis of the real radiation matrix elements, our construction starts from the loop diagrams and exploit their loop-tree dual representation. Our scheme implements exact phase space factorization, handles final state as well as initial state singularities and is suitable for both massless and massive particles.
