MGCAMB

forked from https://github.com/sfu-cosmo/MGCAMB_v4

Linder Gamma

To run MGCAMB for the time-independent no-slip ($\gamma=1$) growth index parametrisation specify

MG_flag = 2
alt_MG_flag = 1
Linder_gamma = 0.4

To run MGCAMB for the time-dependent ($\gamma_{\rm Linder}=\gamma_0+\gamma_1\frac{z^2}{1+z}$) no-slip ($\gamma=1$) growth index parametrisation specify

MG_flag = 2
alt_MG_flag = 2
Linder_gamma_0 = 0.4
Linder_gamma_1 = 0.1

To run MGCAMB for the time-independent growth index parametrisation with $\Sigma=\frac{\mu(1+\gamma)}{2}=1$ specify

MG_flag = 2
alt_MG_flag = 3
Linder_gamma = 0.4