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arXiv 1105.2011hep-th
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具有三个重角的单圈六维六边形积分

The one-loop six-dimensional hexagon integral with three massive corners

Vittorio Del Duca, Lance J. Dixon, James M. Drummond, Claude Duhr, Johannes M. Henn, Vladimir A. Smirnov

摘要:

我们解析地计算了具有三个不相邻外部质量的六维六边形积分。在一个简单的重新标度,它是由一个函数的六个对偶共形不变的交比。结果可以表示为24项之和,只涉及一个基本函数,这是一个简单的线性组合的均匀度为3的超越性的矩阵,双矩阵和三矩阵。我们的方法使用微分方程来确定函数的符号,以及从其符号重建后者的算法。在N=4的超杨-米尔斯理论中,六维六边形积分与散射振幅密切相关,因此我们希望我们的结果有助于理解该理论中散射振幅的结构,特别是在两个环处.

英文摘要:

We compute the six-dimensional hexagon integral with three non-adjacent external masses analytically. After a simple rescaling, it is given by a function of six dual conformally invariant cross-ratios. The result can be expressed as a sum of 24 terms involving only one basic function, which is a simple linear combination of logarithms, dilogarithms, and trilogarithms of uniform degree three transcendentality. Our method uses differential equations to determine the symbol of the function, and an algorithm to reconstruct the latter from its symbol. It is known that six-dimensional hexagon integrals are closely related to scattering amplitudes in N=4 super Yang-Mills theory, and we therefore expect our result to be helpful for understanding the structure of scattering amplitudes in this theory, in particular at two loops.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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