Asymptotic Expansions in Momenta and Masses and Calculation of Feynman Diagrams

TL;DR

This paper reviews asymptotic expansion techniques for Feynman diagrams in momenta and masses, demonstrating their application in calculating massive diagrams efficiently.

Contribution

It provides a comprehensive overview of asymptotic expansion methods and illustrates their use in computing massive Feynman diagrams.

Findings

Asymptotic expansions simplify calculations of complex Feynman diagrams.

The methods are effective for diagrams with large momenta or masses.

Application examples demonstrate practical utility in quantum field theory.

Abstract

General results on asymptotic expansions of Feynman diagrams in momenta and/or masses are reviewed. It is shown how they are applied for calculation of massive diagrams.