Category Archives: FeynCalc

PHI-1.3 released

I’m please to announce a new version of PHI – distributed with FeynCalc-4.1.1.

PHI adds tools to FeynCalc for manipulating covariant derivatives etc. of effective theories like Chiral Perturbation Theory. Moreover, PHI provides an alternative way of creating coupling definitions for FeynArts – convenient for generating a large number of Feynman rules from different Lagrangians.

This is mostly a … Read the rest

FeynCalc status, February 2003

This document is a follow-up to a previous status report.


The goals of FeynCalc remain largely the same, but with a slight change of focus as will be detailed below.

Mathematica and FeynCalc provide a strong framework for working with quantum field theory phenomenology. The strengths of FeynCalc are: 1) It provides a standardized general notation. 2) It … Read the rest

FeynCalc status, August 2000

Here’s a status report, following Rolf’s visit in Zurich:

Present state

Over the years, many tools for calculations in QCD and OPE have been included, reflecting the interests of the author. Also, support for ChPT has been contributed as an extra module.

We regard it as important that a standardized notation has emerged for quantities like quantum fields, momenta, Dirac … Read the rest

Purpose of FeynCalc, August 2000

During Rolf’s visit in Zurich in the summer 2000, we discussed what the overall intentions are with writing a general software package for quantum field theory. Here’s what we came up with:

FeynCalc Manifesto

Rolf Mertig and Frederik Orellana
August 2000

The purpose of FeynCalc is to push the overall progress in calculational quantum field theory. FeynCalc already provides a … Read the rest

Physics and software background of PHI

PHI is a Mathematica package I wrote for my PhD thesis in chiral perturbation theory (ChPT). The intention was to make it general enough that it might be useful for other phenomenologists working both in ChPT and other theories. Below follows a write-up of my motivation for writing the software.

This write-up was done while working on the software – Read the rest