无质量夸克传播子的两圈 Landau-Khalatnikov-Fradkin 变换
高能物理 - 理论
2021-11-24 v3
摘要
Landau-Khalatnikov-Fradkin 变换（LKFTs）给出了线性协变规范类中关联函数的规范依赖性。我们推导了夸克传播子的 LKFT，并在手征极限下显式计算至两圈水平。尽管待评估图的数量显著多于传统计算方案，但这些图本质上更简单，从而使其规范依赖部分的求值比朴素预期快得多。最后，我们还对 LKFT 生成的项进行了重整求和，并将我们的结果与文献中早先的工作进行比较。
引用
@article{arxiv.2107.03910,
title = {Landau-Khalatnikov-Fradkin transformations for the two loop massless quark propagator},
author = {Pietro Dall'Olio and Tim De Meerleer and David Dudal and Silvio Paolo Sorella and Adnan Bashir},
journal= {arXiv preprint arXiv:2107.03910},
year = {2021}
}
备注
arXiv admin note: text overlap with arXiv:1911.01907 Correcting typos. We added a few comments and the diagrammatic representation of the Feynman rules, according to the referee's requests