Loop Space Formalism and Renormalization Group for the Infrared Asymptotics of {QCD}
Loop Space Formalism and Renormalization Group for the Infrared Asymptotics of {QCD}
复制标题
{QCD}红外渐进的循环空间形式和重整化群
DOI：
10.1016/0370-2693(86)91439-5
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发表时间：
1986
影响因子：
4.4
通讯作者：
A. Radyushkin
中科院分区：
文献类型：
--
作者：
G. Korchemsky;A. Radyushkin
证明了微扰QCD的任意硬过程的IR渐近性可以分解为路径有序指数的真空平均的叠加，其IR奇异性与UV奇异性一一对应，从而可以应用重整化群方法研究微扰QCD的IR渐近性.计算了相应RG方程的反常维数Γ cusp，直至两圈。
It is demonstrated that the IR asymptotics of an arbitrary hard process of perturbative QCD can be factorized out into the superposition of vacuum averages of path-ordered exponentials, the IR singularities of which are shown to be in a one-to-one correspondence with the UV ones, thus allowing one to apply renormalization group methods to study the IR asymptotics of perturbative QCD. The anomalous dimension Γcuspof the relevant RG equation is calculated up to two loops.