FormCalc 6
T. Hahn
TL;DR
The paper surveys FormCalc 6 and related FeynArts enhancements aimed at easing automated amplitude generation and code production for one-loop calculations. It introduces advanced diagram-filtering tools in FeynArts and an alternate FORM–Mathematica workflow that reduces intermediate expression sizes via ReadForm. It also adds CutTools integration for OPP-based one-loop evaluation, along with substantial improvements to Dirac chain handling in 4D and features for reusing abbreviations and session persistence (Keep, Abbreviate). Together, these innovations streamline large-amplitude computations, improve reliability, and offer greater flexibility in code-generation and workflow management.
Abstract
The new features and improvements in FormCalc Version 6 as well as some recent additions in FeynArts for easier diagram selection are reported.