While working on/off towards a 4.2 release of FeynCalc, I have finally updated the PHI code of the latest FeynCalc pre-release and the ChPT examples used in my thesis to be in sync with each other. If someone finds this not to be so, please report it.
The calculations in the weak sector are very time consuming. To save some … Read the rest
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
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
A lot of improvements and bug fixes have been made (see below), most of them inspired by my work on the calculation of the K -> 2 pi decay (see “Dispersion relations and soft pion theorems for K -> pi pi”). The most important of these is probably the new function
UNMSplit). This new version of PHI is … Read the rest
Here’s a status report, following Rolf’s visit in Zurich:
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
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:
Rolf Mertig and Frederik Orellana
The purpose of FeynCalc is to push the overall progress in calculational quantum field theory. FeynCalc already provides a … Read the rest
FeynCalc has been open-sourced. More on this and future plans for FeynCalc will available shortly. This will have some implications on the future of PHI: FeynCalc will from now on be developed in an open source model. PHI 1.2 will be one of several modules of FeynCalc – still developed by yours sincerely, and will have its code stored in … Read the rest
This write-up was done while working on the software – … Read the rest