Dear All,
In a nonstandard cosmological model two base parameters X and Y are theoretically constrained via the equation Y=F(X), where F is some simple
(and known) algebraic function (so X and Y cannot be independently drawn from their respective flat prior distributions) . Specifically, in my case Y is the spectral tilt of scalar perturbations, n_s, and X is the dark energy equation of state w. What is the best way to impose this theoretical constraint in CosmoMC ?
Any help with this matter (for a nonf90expert) would be much appreciated.
Thanks,
Meir
Constrained Base Parameters in CosmoMC

 Posts: 8
 Joined: December 16 2019
 Affiliation: Tel Aviv University

 Posts: 1681
 Joined: September 23 2004
 Affiliation: University of Sussex
 Contact:
Re: Constrained Base Parameters in CosmoMC
You probably want to change the input parameters and edit TP_ParamArrayToTheoryParams in CosmologyParameterization.f90.