Massless two-loop self-energy diagram: Historical review

TL;DR

This paper reviews the historical development and key results related to massless two-loop self-energy diagrams, highlighting their significance and various applications in theoretical physics.

Contribution

It provides a comprehensive historical overview of the progress and important findings concerning massless two-loop self-energy diagrams.

Findings

Compilation of significant results in the field

Identification of key applications of these diagrams

Summary of historical milestones

Abstract

This class of diagrams has numerous applications. Many interesting results have been obtained for it.