Code

Parameterized Post-Friedmann (PPF) module for CAMB:

You can use the code to solve linear perturbations and CMB power spectrum in dark energy models with a general equation of state, including the (w0, wa) parameterization, see more in our paper on crossing the “Phantom divide”. Read the instructions and download the codeĀ here.

The PPF module can also be slightly adapted to solving linear perturbations and CMB power spectrum in modified gravity theories such as the DGP, and f(R) models, as an example, see our paper on DGP.