A Feynman-graph generator for any order of coupling constants

TL;DR

This paper introduces a computer program that automatically generates Feynman graphs for complex high-energy physics processes, including an acceleration method for efficient graph generation and elimination, applicable to any order of coupling constants.

Contribution

It presents a novel Feynman-graph generator capable of handling any order of coupling constants with improved efficiency, integrated into the GRACE system for automatic calculations.

Findings

Efficient generation and elimination of Feynman graphs for high-order processes.

Utility program for drawing generated graphs.

Applicability to various theoretical models in high-energy physics.

Abstract

A computer program has been developed which generates Feynman graphs automatically for scattering and decay processes in non-Abelian gauge theory of high-energy physics. A new acceleration method is presented for both generating and eliminating graphs. This method has been shown to work quite efficiently for any order of coupling constants in any kind of theoretical model. A utility program is also available for drawing generated graphs. These programs consist of the most basic parts of the GRACE system, which is now used to automatically calculate tree and one-loop processes.