Diagrammatic Hopf algebra of cut Feynman integrals: the one-loop case
Diagrammatic Hopf algebra of cut Feynman integrals: the one-loop case
复制标题
割费曼积分的图解 Hopf 代数:单循环情况
DOI:
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发表时间:
2017
期刊:
影响因子:
--
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
A bstractWe construct a diagrammatic coaction acting on one-loop Feynman graphs and their cuts. The graphs are naturally identified with the corresponding (cut) Feynman integrals in dimensional regularization, whose coefficients of the Laurent expansion in the dimensional regulator are multiple polylogarithms (MPLs). Our main result is the conjecture that this diagrammatic coaction reproduces the combinatorics of the coaction on MPLs order by order in the Laurent expansion. We show that our conjecture holds in a broad range of nontrivial one-loop integrals. We then explore its consequences for the study of discontinuities of Feynman integrals, and the differential equations that they satisfy. In particular, using the diagrammatic coaction along with information from cuts, we explicitly derive differential equations for any one-loop Feynman integral. We also explain how to construct the symbol of any one-loop Feynman integral recursively. Finally, we show that our diagrammatic coaction follows, in the special case of one-loop integrals, from a more general coaction proposed recently, which is constructed by pairing master integrands with corresponding master contours.
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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
DOI:
10.4310/cntp.2017.v11.n3.a3
发表时间:
2017
期刊:
arXiv: High Energy Physics - Theory
影响因子:
--
作者:
Oliver Schnetz with E. Panzer
通讯作者:
Oliver Schnetz with E. Panzer