FeynHelpers is a collection of interfaces that allow you to use other HEP-related tools from your FeynCalc session.

FeynHelpers is designed as an add-on for FeynCalc. To use it you need at least FeynCalc 9.2 and Mathematica 8.

Tools that are currently supported are

• FIRE 5.2
• Package-X 2.1

• Run the following instruction in a Kernel or Notebook session of Mathematica

  Import["https://raw.githubusercontent.com/FeynCalc/feynhelpers/master/install.m"]
  InstallFeynHelpers[]
  

  If the above code fails with URLFetch::invhttp: SSL connect error (e.g. on Mathematica 9 under OS X), try

  ImportString[URLFetch["https://raw.githubusercontent.com/FeynCalc/feynhelpers/master/install.m"]]
  InstallFeynHelpers[]
  

• The automatic installer can also install Package-X and FIRE for you. It will offer you this possiblity at the end of the installation process

• Create a directory FeynHelpers inside

   FileNameJoin[{$UserBaseDirectory, "Applications", "FeynCalc", "AddOns"}]
  

  and put the source code there.

• Install Package-X and FIRE packages. It should be possible to load Package-X via

   <<X`
  

  and FIRE via

   << FIRE5`
  

If you like the bleeding edge and you are already using the development version of FeynCalc, you can also install the development version of FeynHelpers

Import["https://raw.githubusercontent.com/FeynCalc/feynhelpers/master/install.m"]
InstallFeynHelpers[InstallFeynHelpersDevelopmentVersion->True]

For usage information see the accompanying paper arXiv:1611.06793 and the supplied examples.

If you use FeynHelpers in you work, please cite

• V. Shtabovenko, "FeynHelpers: Connecting FeynCalc to FIRE and Package-X", Comput. Phys. Commun., 218, 48-65, 2017, arXiv:1611.06793

Also don't forget to cite the authors of the tools that you are calling from FeynHelpers, which are

• FIRE if you use FIREBurn
• Package X if you use PaXEvaluate

• The code of FeynHelpers is covered by the GNU General Public License 3.
• This does not apply to the packages for which FeynHelpers provides an interface to FeynCalc. For the licensing of those packages please check the informations provided by the respective authors.