Four-loop collinear anomalous dimension in N = 4 Yang-Mills theory
Four-loop collinear anomalous dimension in N = 4 Yang-Mills theory
复制标题
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
期刊:
影响因子:
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通讯作者:
A. Volovich
中科院分区:
文献类型:
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作者:
F. Cachazo;M. Spradlin;A. Volovich
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:
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影响因子:
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作者:
S. Moch;J. Vermaseren;A. Vogt
通讯作者:
S. Moch;J. Vermaseren;A. Vogt