Abstract
The present paper compares two LRS Bianchi type-I bulk viscous models of the universe constructed in f(R, T) theory of gravity. A parameterization of deceleration parameter (DP) is considered to find solutions of the models. This parameterization of DP reduces to both linear-varying deceleration parameter (LVDP) (Akarsu and Dereli in Int J Theor Phys 51:612–621, 2011) and bilinear-varying deceleration parameter (BVDP) (Mishra and Dua in Astrophys Space Sci 364:1–12, 2019) for specific values of model parameters. The cosmic evolution is discussed with the help of LVDP in model I and BVDP in model II. Both the models exhibit phase transition from early cosmic decelerated phase to the present accelerated phase. We discuss physical and geometrical properties of the models graphically and compare them in detail. In addition, best-fit values of model parameters are obtained using 51 values of observational Hubble parameter.
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Mishra, R.K., Dua, H. Investigation on behavior of deceleration parameter with LRS Bianchi type-I cosmological models. Indian J Phys 97, 993–1006 (2023). https://doi.org/10.1007/s12648-022-02412-1
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DOI: https://doi.org/10.1007/s12648-022-02412-1