任意局部算子的UV反项自动提取

Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018) Pub Date : 2018-10-02 DOI:10.22323/1.303.0066

B. Ruijl

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引用次数: 0

摘要

我们概述了如何使用R^*$-运算来计算费曼图的极项。作为一个例子，我们简要地讨论了希格斯衰变为胶子的计算。接下来，我们将演示如何使用$R^*$-操作获得\MSbar{}反项。最后，我们描述了如何从L-1环无质量传播子图中计算具有任意局部算子的任意L环费曼图的UV反项。

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Automated extraction of UV counterterms for arbitrary local operators

We sketch how the $R^*$-operation can be used to compute the pole terms of Feynman diagrams. As an example, we briefly discuss the computatation of the Higgs decay to gluons. Next, we illustrate how \MSbar{} counterterms can be obtained with the $R^*$-operation. Finally, we describe how the UV counterterm of any $L$-loop Feynman diagram with arbitrary local operators can be computed from $L-1$-loop massless propagator diagrams.

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Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)

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