CP3-Origins, Danish Institute for Advanced Studies, University of Southern Denmark, DK-5230 Odense, Denmark.
Phys Rev Lett. 2013 May 10;110(19):192001. doi: 10.1103/PhysRevLett.110.192001.
We introduce a generalization of the conventional renormalization schemes used in dimensional regularization, which illuminates the renormalization scheme and scale ambiguities of perturbative QCD predictions, exposes the general pattern of nonconformal {β(i)} terms, and reveals a special degeneracy of the terms in the perturbative coefficients. It allows us to systematically determine the argument of the running coupling order by order in perturbative QCD in a form which can be readily automatized. The new method satisfies all of the principles of the renormalization group and eliminates an unnecessary source of systematic error.
我们引入了一种在维度正规化中常用的重整化方案的推广，它阐明了微扰 QCD 预测的重整化方案和尺度不确定性，揭示了非共形{β(i)}项的一般模式，并揭示了微扰系数中项的特殊简并性。它使我们能够以一种易于自动化的形式系统地确定微扰 QCD 中跑动耦合的阶数。新方法满足了重整化群的所有原则，并消除了系统误差的一个不必要来源。
