- CosmoMC
Fortran 2008 parallelized MCMC sampler (general and cosmology)
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- MGCosmoMC
patch that implements MGCAMB in CosmoMC
Run as it is a usual instance of CosmoMC. Choose the model and the parameter ranges in batch3/params_CMB_MG.ini (or batch2/params_CMB_MG.ini)
MGCosmoMC follows the same installation procedure as CosmoMC.
For full details see the ReadMe.
Since there is no MG counterpart of Halofit, nonlinear corrections should be turned off when using MGCosmoMC. Datasets probing nonlinear scales should be used with care and with proper cuts (to avoid nonlinear scales). For the DES 1YR dataset we provide three cuts of the nonlinear regime: soft, standard and aggressive. Choose one of them in data/DES/DES_1YR_final.dataset . Also, be sure to set wl_use_nonlinear = F and wl_use_Weyl = T in batch3/DES.ini .
This version has three derived parameters that depend on the Planck parametrization of the Mu-Gamma functions ( MG_flag = 1, pure_MG_flag = 1, mugamma_par = 2 ). If you use a different model, please modify CosmologyParametrizations_MG.f90 and paramnames/params_CM.paramnames accordingly.
