FeynGraph

FeynGraph is a modern Feynman diagram generation toolkit aiming to be as versatile as possible while remaining pleasant to use. The library itself is written in Rust, additional language bindings are available for Python and Wolfram Mathematica.

Installation

Python Rust Mathematica

The FeynGraph Python bindings are published to PyPI and can therefore easily installed with e.g. pip

pip install feyngraph

In addition to the library interface, there is also a more classical command line utility. This requires some extra dependencies, which can be installed with e.g.

pip install feyngraph[cli]

Building From Source

The FeynGraph Python library can also easily be built from source, which requires a Rust toolchain and maturin. Then, in the cloned repository, a Python wheel can be compiled by running

maturin build -r

The library can also immediately be installed by running

pip install .

To use FeynGraph in a Rust project, it can simply be added to the project with

cargo add feyngraph

or be manually added to Cargo.toml as

[dependencies]
feyngraph = "0.1"

FeynGraph includes experimental Wolfram Mathematica bindings which use Mathematica's ExternalEvaluate system to call the FeynGraph Python library. To use the interface, make sure to configure a Python environment in which FeynGraph is installed as described here. Then, running

ExternalEvaluate["Python", "import feyngraph; feyngraph.import_wolfram()"] // ToExpression

imports the FeynGraph Mathematica interface.