arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2002.08042hep-ph
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如何选择Master Integrals

How to choose master integrals

A. V. Smirnov, V. A. Smirnov

摘要:

当计算给定费曼积分族的积分时,对应于一些费曼图,标准程序是构造一个算法,该算法提供了将任何特定积分写为所谓主积分的线性组合的可能性。为此,使用基于解决零件关系集成的公共代码(AIR,FIRE,REDUZE,LiteRed,KIRA)和私有代码。然而,这些代码提供的主积分的选择并不总是最佳的。我们提出了一个算法,以改善一个给定的基础的主积分,以及其计算机实现;也看到一个竞争的变体[1]。

英文摘要:

The standard procedure when evaluating integrals of a given family of Feynman integrals, corresponding to some Feynman graph, is to construct an algorithm which provides the possibility to write any particular integral as a linear combination of so-called master integrals. To do this, public (AIR, FIRE, REDUZE, LiteRed, KIRA) and private codes based on solving integration by parts relations are used. However, the choice of the master integrals provided by these codes is not always optimal. We present an algorithm to improve a given basis of the master integrals, as well as its computer implementation; see also a competitive variant [1].

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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