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arXiv 1905.08115hep-ph
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计算双环$N$点费曼图的一种新的混合分析/数值方法框架

Framework for a novel mixed analytical/numerical approach for the computation of two-loop $N$-point Feynman diagrams

J. Ph. Guillet, E. Pilon, Y. Shimizu, M. S. Zidi

摘要:

讨论了一个用双积分表示和计算双环$N$ -点费曼图的框架。被积函数是“广义单循环型”多点函数乘以简单的加权因子。这两个变量的最后积分是数值计算,而被积函数中的成分,特别是“广义单循环型”函数,是解析计算的。这个想法是说明了几个例子的标量三点和四点功能。

英文摘要:

A framework to represent and compute two-loop $N$-point Feynman diagrams as double-integrals is discussed. The integrands are 'generalised one-loop type" multi-point functions multiplied by simple weighting factors. The final integrations over these two variables are to be performed numerically, whereas the ingredients involved in the integrands, in particular the "generalised one-loop type" functions, are computed analytically. The idea is illustrated on a few examples of scalar three- and four-point functions.

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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