The CLASS code with the equation of state approach to dark energy perturbations
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README.rst

CLASS_EOS_FR

Cosmic Linear Anisotropy Solving System

With Cosmological Perturbations in f(R) Gravity

The code CLASS_EOS_FR is an extension of the CLASS code.

For download and information on class, see http://class-code.net and https://github.com/lesgourg/class_public

(README file adapted from the README_CLASS.rst file.)

Downloading the code

Go to https://github.com/borisbolliet/class_eos_fr_public

Using the code

You can use class_eos_fr_public freely, provided that in your publications you cite at least the papers:

Do cosmological data rule out f(R) with w≠−1? (Battye, Bolliet, Pace, 2017).

CLASS II: Approximation schemes (Blas, Lesgourgues, Tram, 2011).

Compiling CLASS_EOS_FR and getting started

Move to the code repository

$ cd class_eos_fr_public

Clean up and Compile

$ make clean

$ make

(You may need to do a ‘$ sudo make’.)

The code class_eos_fr runs in parallel, so you need a gcc compiler that is not clang.

The previous commands compile both the executable and the python wrapper. If you do not want the classy python module do ‘$ make class’.

For the python module, you need the prerequisites such as numpy, scipy and Cython installed on your computer.

Then, run the code with

$ ./class explanatory-class-eos.ini

The explanatory files are reference input files, containing and explaning the use of all possible input parameters.

Python Wrapper and Jupyter Notebooks

To use CLASS from python, or ipython notebooks, or from the montepython parameter extraction code, you need to compile not only the code, but also its python wrapper. (This can be done by typing just 'make' instead of 'make class’.)

Support

To get support, please open a new issue on:

https://github.com/borisbolliet/class_eos_fr_public