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arXiv 1909.04055hep-th
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三角图、距离几何与Feynman积分的对称性

Triangle diagram, Distance Geometry and Symmetries of Feynman Integrals

Barak Kol, Subhajit Mazumdar

摘要:

我们通过费曼积分的对称性(SFI)方法研究了最一般的三角图。得到了SFI方程组,并在一个简单的基础上提出。该系统被解决,提供了一个基本上已知的表达式的新的推导。我们强调根据Davydychev-Delbourgo [1]讨论的四面体的距离几何来描述基本几何,四面体是对偶壳上图。此外,奇异轨迹被识别,并且轨迹的两个分量上的图的值被表示为后代气泡图的线性组合。无质量三角形和相关的魔术联系被重新审视。

英文摘要:

We study the most general triangle diagram through the Symmetries of Feynman Integrals (SFI) approach. The SFI equation system is obtained and presented in a simple basis. The system is solved providing a novel derivation of an essentially known expression. We stress a description of the underlying geometry in terms of the Distance Geometry of a tetrahedron discussed by Davydychev-Delbourgo [1], a tetrahedron which is the dual on-shell diagram. In addition, the singular locus is identified and the diagram's value on the locus's two components is expressed as a linear combination of descendant bubble diagrams. The massless triangle and the associated magic connection are revisited.

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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