费曼图及其极大切割的渐近分析
高能物理 - 唯象学
2020-12-30 v3 高能物理 - 理论
摘要
ASPIRE 程序基于朗道奇点和幂几何方法,揭示在给定极限下对给定费曼图进行渐近求值所需的区域,同时也允许对来自顶面的标度进行求值。在本工作中,我们将牛顿多面体的顶面的具有相等分量的标度与给定费曼积分的极大切割联系起来。因此,我们连接了两种独立的费曼图分析方法。
引用
@article{arxiv.2003.02451,
title = {Asymptotic analysis of Feynman diagrams and their maximal cuts},
author = {B. Ananthanarayan and Abhijit B. Das and Ratan Sarkar},
journal= {arXiv preprint arXiv:2003.02451},
year = {2020}
}
备注
34 pages latex, 7 figures and 2 tables, ancillary Mathematica files provided, substantially extended and improved, added new sections(sub-section-2.5, section-3,4,appendix-B), References added, version accepted for publication in EPJC