Contrasting the bulk viscous model with the standard $\Lambda$CDM using Bayesian statistics

The causal dissipative model is a plausible choice to explain the late accelerated epoch of universe. At same time, $\Lambda$ CDM considered standard cosmological data corresponding evolution We consider bulk viscous in which dissipation driven by viscosity $\zeta =\alpha \rho ^{1/2}$ , described using full Israel-Stewart theory. computed parameters latest observational (Pantheon). contrasted this with for phase Bayesian inference method. Bayes factor was obtained calculating likelihood Pantheon data. Suitable prior values were assumed calculate likelihood. It shows that evidence against very strong according Jeffreys scale.