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arXiv 1809.03399hep-th
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作为欧拉特征线的主积分的个数

The number of master integrals as Euler characteristic

Thomas Bitoun, Christian Bogner, René Pascal Klausen, Erik Panzer

摘要:

我们给出了一个简单的介绍参数的方法推导之间的移位关系的费曼积分和结果的数量的主积分。位移关系由Lee-Pomeransky多项式$\mathcal{G}$的参数零化子得到。通过将Feynman积分识别为多维Mellin变换,我们证明了这种方法可以生成每个移位关系。一个给定的费曼积分族形成一个向量空间,它的有限维自然地被解释为主积分的个数。这个数是多项式$\mathcal{G}$的欧拉特征。

英文摘要:

We give a brief introduction to a parametric approach for the derivation of shift relations between Feynman integrals and a result on the number of master integrals. The shift relations are obtained from parametric annihilators of the Lee-Pomeransky polynomial $\mathcal{G}$. By identification of Feynman integrals as multi-dimensional Mellin transforms, we show that this approach generates every shift relation. Feynman integrals of a given family form a vector space, whose finite dimension is naturally interpreted as the number of master integrals. This number is an Euler characteristic of the polynomial $\mathcal{G}$.

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