论文标题
两层计算中的理性术语
Rational terms in two-loop calculations
论文作者
论文摘要
我们介绍了基于$ d $尺寸在两回路级别中的R型操作的扩展，其中所有Feynman图的分子可以在四个维度中构造，并且由$（D-4）$的相互作用的合理术语构成了$（D-4）$ - dumensional Numerers Numerers Numerers Numerers Numerers Numerers Numerers cunterms的contuctiite counterms counters counters counters的构造。这代表了类型$ r_2 $的理性术语概念的扩展到两个循环。我们提供了一种一般的方法来计算大规模一尺度t积分的一循环和两循环的合理反应。最后，我们介绍了QED的全套紫外线原点的全套合理反对，最高两层。
We present an extension of the renormalisation procedure based on the R-operation in $D$ dimensions at two-loop level, in which the numerators of all Feynman diagrams can be constructed in four dimensions, and the rational terms stemming from the interplay of $(D-4)$-dimensional numerator parts and UV poles are fully reconstructed from a finite set of universal local counterterms. This represents an extension of the concept of rational terms of type $R_2$ to two loops. We provide a general method to compute one and two-loop rational counterterms from massive one-scale tadpole integrals. Finally, we present the full set of rational counterterms of UV origin for QED up to two-loop order.
