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Cosmology with the late time isotropy of the Bianchi type I model in f(R,T)f(R,T) theory

    https://doi.org/10.1142/S0219887824500609Cited by:1 (Source: Crossref)

    In this study, we consider the Bianchi type I model in the framework of f(R,T)f(R,T) gravity theory. We solve the field equations with the help of an anisotropy parameter that can show the anisotropic behavior of the universe in the past and its approximation to isotropy today. For two different models, we examine the phase transition in the expansion of the universe by analyzing some cosmologic parameters. We conduct our investigation by applying the Markov Chain Monte-Carlo analysis and Bayesian technique to the Cosmic Chronometer, Phanteon and BAO datasets, taking into account the observational constraints on the parameters. We show that the two different models we obtained explain the transition from the slowing phase to the accelerating phase in the expansion of the universe, that the models behave in harmony with the ΛΛCDM model today, and that the current values of the cosmological parameters predicted by the models are compatible with the values indicated by the observations and we conclude that the Model-I is more compatible than the Model-II in this conformity.

    PACS: 04.50.kd, 98.80.k, 98.80.JK
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