A generalized ΛCDM model with parameterized Hubble parameter in particle creation, viscous and f(R) model framework
G. P. Singh, Romanshu Garg, Ashutosh Singh · International Journal of Geometric Methods in Modern Physics · 2025
In this study, we construct a theoretical framework based on the generalized Hubble parameter form which may arise within the particle creation, viscous and [Formula: see text] gravity theory. The Hubble parameter is scrutinized for its compatibility with the observational data relevant to the late-time universe. By using Bayesian statistical techniques based on [Formula: see text] minimization method, we determine model parameters’ best fit values for the cosmic chronometer and supernovae Pantheon datasets. For the best fit values, the cosmographic and physical parameters are analyzed to understand the cosmic dynamics in model. We also analyze the model section criterion in comparison to the [Formula: see text] cold dark matter model.