Algebraic Structure of Cut Feynman Integrals and the Diagrammatic Coaction.

Algebraic Structure of Cut Feynman Integrals and the Diagrammatic Coaction.
复制标题

割费曼积分的代数结构和图解相互作用。

DOI:
10.1103/physrevlett.119.051601
复制
发表时间:
2017
影响因子:
8.6
通讯作者:
E. Gardi
E. Gardi
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
S. Abreu;R. Britto;C. Duhr;E. Gardi

文献摘要

参考文献

被引文献

相似文献

我们研究了费曼积分的代数和分析结构,提出了一个操作,将一个积分映射成从主被积函数和相应的主轮廓得到的积分对。这个操作是一个共同作用。它简化为已知的对多个多面体的共同作用,但更普遍地适用,例如,超几何函数共同作用也适用于一般的单圈费曼积分与任何配置的内部和外部质量,并在维正则化。在这种情况下,我们证明,它可以给出一个图形表示纯粹在图上的操作,即,收缩和切割的边缘。该作用量可以直接访问费曼积分的(迭代)不连续性,并有助于直接推导它们所承认的微分方程。特别是,任何一个回路积分的微分方程确定的图形的相互作用,使用有限的信息,他们的最大,次最大的削减。
We study the algebraic and analytic structure of Feynman integrals by proposing an operation that maps an integral into pairs of integrals obtained from a master integrand and a corresponding master contour. This operation is a coaction. It reduces to the known coaction on multiple polylogarithms, but applies more generally, e.g., to hypergeometric functions. The coaction also applies to generic one-loop Feynman integrals with any configuration of internal and external masses, and in dimensional regularization. In this case, we demonstrate that it can be given a diagrammatic representation purely in terms of operations on graphs, namely, contractions and cuts of edges. The coaction gives direct access to (iterated) discontinuities of Feynman integrals and facilitates a straightforward derivation of the differential equations they admit. In particular, the differential equations for any one-loop integral are determined by the diagrammatic coaction using limited information about their maximal, next-to-maximal, and next-to-next-to-maximal cuts.
DOI: 10.1063/1.4926985
发表时间: 2015-04
影响因子: 1.3
作者:
Luise Adams;C. Bogner;S. Weinzierl
通讯作者: Luise Adams;C. Bogner;S. Weinzierl
DOI: 10.1063/1.4944722
发表时间: 2015-12
影响因子: 1.3
作者:
Luise Adams;C. Bogner;S. Weinzierl
通讯作者: Luise Adams;C. Bogner;S. Weinzierl
DOI: 10.1063/1.4896563
发表时间: 2014-05
期刊: arXiv: High Energy Physics - Phenomenology
影响因子: --
作者:
Luise Adams;C. Bogner;S. Weinzierl
通讯作者: Luise Adams;C. Bogner;S. Weinzierl
DOI: 10.1007/jhep10(2014)125
发表时间: 2014
影响因子: 5.4
作者:
Abreu S
通讯作者: Abreu S