PyR@TE 3

New in v3.0:

The core of the program is now based on <a href="https://arxiv.org/abs/1906.04625">1906.04625</a>, where the general gauge couplings RGEs are presented up to the 3-loop order.
Python 3 compatibility
Drastic improvement of the performances (for two-loop computations, the running time may be reduced from a few hours to a few seconds / minutes)
The structure of the model file has been rethought, and in particular the implementation of the Lagrangian. New features are available.
Major improvements to the PyLie group-theoretical module (better performances + new functionalities)
Some other new features, among which : coupling substitutions, Yukawa matrices assumptions, VeV running.
An interface with the Mathematica package FeynRules (<a href="https://arxiv.org/abs/1310.1921">1310.1921</a>) is under development.

Dependencies :

Python ≥ 3.6
PyYAML ≥ 5.3
Sympy ≥ 1.5
h5py ≥ 2.10
Numpy ≥ 1.18
Scipy ≥ 1.4
Matplotlib ≥ 3.1

Download:

The only thing to do is to clone this repository, and begin working in PyR@TE 3's main folder.

Description:

PyR@TE is a Python code that computes the renormalization group equations (RGEs) for any renormalizable non-supersymmetric model. After the gauge groups, the particle content and the Lagrangian have been defined in a model file, PyR@TE calculates the RGEs for all of the couplings at the one- or two-loop level, and up to the three-loop level for gauge couplings.

How to use PyR@TE

An official documentation is available at <a href="https://arxiv.org/abs/2007.12700">2007.12700</a>. In addition, two example notebooks are provided with the software and can be found in doc/:

Tutorial.ipynb explains some of the general features of PyR@TE 3 and shows how to run it ;
PyLieDatabase.ipynb explains how to interact with PyLie's database and to use Clebsch-Gordan coefficients (CGCs) when building a Lagrangian.

Note: When using the 3-loop gauge results, please consider citing <a href="https://arxiv.org/abs/1906.04625">1906.04625</a> in addition to <a href="https://arxiv.org/abs/2007.12700">2007.12700</a>.

Contact

For suggestions, bug reports or any comments please contact the author at :

sartore at lpsc.in2p3.fr

Pyrate

Install / Use

README