Algebraic Structure of Cut Feynman Integrals and the Diagrammatic Coaction.
Algebraic Structure of Cut Feynman Integrals and the Diagrammatic Coaction.
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割费曼积分的代数结构和图解相互作用。
DOI:
10.1103/physrevlett.119.051601
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发表时间:
2017
影响因子:
8.6
通讯作者:
E. Gardi
中科院分区:
文献类型:
--
作者:
S. Abreu;R. Britto;C. Duhr;E. Gardi
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.
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影响因子:
1.3
作者:
Luise Adams;C. Bogner;S. Weinzierl
通讯作者:
Luise Adams;C. Bogner;S. Weinzierl
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
影响因子:
5.4
作者:
Abreu S
通讯作者:
Abreu S