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arXiv 1807.01007hep-phhep-th
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关于一类Feynman积分的模型迭代积分

On a class of Feynman integrals evaluating to iterated integrals of modular forms

Luise Adams, Stefan Weinzierl

摘要:

在这次演讲中,我们讨论了一类费曼积分,它可以表示为模形式的迭代积分的尺寸正则化参数的所有订单。我们回顾了与椭圆曲线和模形式相关的数学前提。Feynman积分是模形式的迭代积分,它超越了多重积分的范畴。尽管如此,我们可以通过非代数变换将所有被考虑的微分方程组转化为$\varepsilon$形式,这使得迭代积分的解是直接的。

英文摘要:

In this talk we discuss a class of Feynman integrals, which can be expressed to all orders in the dimensional regularisation parameter as iterated integrals of modular forms. We review the mathematical prerequisites related to elliptic curves and modular forms. Feynman integrals, which evaluate to iterated integrals of modular forms go beyond the class of multiple polylogarithms. Nevertheless, we may bring for all examples considered the associated system of differential equations by a non-algebraic transformation to an $\varepsilon$-form, which makes a solution in terms of iterated integrals immediate.

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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