Four-loop collinear anomalous dimension in N = 4 Yang-Mills theory

Four-loop collinear anomalous dimension in N = 4 Yang-Mills theory
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N = 4 Yang-Mills 理论中的四环共线反常维数

DOI:
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发表时间:
2007
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影响因子:
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通讯作者:
A. Volovich
A. Volovich
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作者:
F. Cachazo;M. Spradlin;A. Volovich

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本文在N = 4的Yang-Mills空间中计算了支配胶子散射振幅的普遍亚导红外结构的共线反常维数g(A)中的四圈项g(4)。利用障碍物法从四圈四胶子迭代关系中的1/e奇异性中提取这个量,我们得到g(4)= -1240.9,估计数值不确定度为0.02%。我们还分析了g(A)的强耦合行为的结果的含义,发现最近由Alday和Maldacena使用AdS/CFT计算的弦理论预测的支持。
We report a calculation in N = 4 Yang-Mills of the four-loop term g (4) in the collinear anomalous dimension g(A) which governs the universal subleading infrared structure of gluon scattering amplitudes. Using the method of obstructions to extract this quantity from the 1/e singularity in the four-gluon iterative relation at four loops, we find g (4) = -1240.9 with an estimated numerical uncertainty of 0.02%. We also analyze the implication of our result for the strong coupling behavior of g(A), finding support for the string theory prediction computed recently by Alday and Maldacena using AdS/CFT.
DOI: 10.1016/j.nuclphysb.2004.03.030
发表时间: 2004-03
期刊: --
影响因子: --
作者:
S. Moch;J. Vermaseren;A. Vogt
通讯作者: S. Moch;J. Vermaseren;A. Vogt