The effective fluid approach for f(R) and Horndeski models.

This is the website of the effective fluid approach for f(R) and Horndeski models series of papers 1811.02469 and 1904.06294, by Rubén Arjona, Savvas Nesseris and Wilmar Cardona. Here we provide the numerical codes used in the papers to implement the effective fluid approach in the popular Boltzmann CLASS code.

Numerical analysis codes:
1) The (Fortran, C, Mathematica and Python) codes used in the f(R) paper can be downloaded from here.

2) The Mathematica codes used in the Horndeski paper can be downloaded from here.

3) EFCLASS, used in both the f(R) and the Horndeski papers, can be downloaded from here.

GitHub EFCLASS page:
Our modifications to the CLASS code, called EFCALSS, can also be found at this GitHub page here.