Coaction for Feynman integrals and diagrams

Coaction for Feynman integrals and diagrams
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DOI:
10.22323/1.303.0047
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发表时间:
2018-07
期刊:
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)
影响因子:
--
通讯作者:
S. Abreu;R. Britto;C. Duhr;E. Gardi;J. Matthew
S. Abreu;R. Britto;C. Duhr;E. Gardi;J. Matthew
中科院分区:
其他
文献类型:
--
作者:
S. Abreu;R. Britto;C. Duhr;E. Gardi;J. Matthew

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我们提出了一个一般的家庭的积分费曼图,如多重多项式和广义超几何函数的评价中出现的作用。我们进一步推测这种相互作用和费曼图上的图形操作之间的联系。在单圈阶,有一个积分的基,对于这个基,这种对应是完全明确的。我们讨论的特点和目前的例子的图形相互作用的两个循环积分。我们还给出了函数${}_{p+1}F_p$和Appell $F_1$的余作用。
We propose a general coaction for families of integrals appearing in the evaluation of Feynman diagrams, such as multiple polylogarithms and generalized hypergeometric functions. We further conjecture a link between this coaction and graphical operations on Feynman diagrams. At one-loop order, there is a basis of integrals for which this correspondence is fully explicit. We discuss features and present examples of the diagrammatic coaction on two-loop integrals. We also present the coaction for the functions ${}_{p+1}F_p$ and Appell $F_1$.