arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0709.0419hep-th
收藏

费曼图解析计算的算子方法

Operator approach to analytical evaluation of Feynman diagrams

A. P. Isaev

摘要:

提出了多圈费曼图解析计算的算子方法。我们表明,已知的分析方法的评价无质量费曼积分,如积分的部分方法和方法的“唯一性”(这是基于星三角关系),可以大大简化,通过使用这种操作的方法。为了证明多圈费曼图的分析评价的运营商方法的优点,我们计算梯形图的无质量$ϕ^3$理论(这些图的分析结果表示在多个多项式)。它示出了如何算子形式主义可以应用到某些大量的费曼图的计算和调查的Lipatov可积链模型。

英文摘要:

The operator approach to analytical evaluation of multi-loop Feynman diagrams is proposed. We show that the known analytical methods of evaluation of massless Feynman integrals, such as the integration by parts method and the method of "uniqueness" (which is based on the star-triangle relation), can be drastically simplified by using this operator approach. To demonstrate the advantages of the operator method of analytical evaluation of multi-loop Feynman diagrams, we calculate ladder diagrams for the massless $ϕ^3$ theory (analytical results for these diagrams are expressed in terms of multiple polylogarithms). It is shown how operator formalism can be applied to calculation of certain massive Feynman diagrams and investigation of Lipatov integrable chain model.

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。

↑