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Dynamical system cosmological model fitting with Mathematica

Posted: December 04 2023
by Manuel Alva

I have studied a theoretical cosmological model with 1 free parameter using the dynamical system approach, thus the Hubble parameter expression is in term of the dynamical variables and solved numerically. I've used Mathematica to fit the Pantheon dataset to the model but I have encountered with some problems with it.

My question is if it is possible to do the chi-squared analysis to the distance modulus expression since it depends explicitly on the H(z) and the latter does not have an explicit dependence on the redshift since it's been numerically solved

This question may have already been asked, but I cannot find it. Please pardon me. I will be grateful if you help me out.
Thank you a lot in advance.