Abstract
In the present paper, we investigate cosmological models in the most recent proposed modified f(R,Lm,T)-gravity theory in the context of a flat, homogeneous, and isotropic spacetime with perfect fluid source. We solve the field equations for the constant equation of state ω=1,13,0,−23,−1 with matter Lagrangian Lm=p and obtain five cosmological models. We make observational constraints on the model parameters involved in these four derived models using MCMC (Monte Carlo Markov Chain) analysis of cosmic chronometer Hubble datasets. After that, we investigate the effective equation of state and deceleration parameter for each model. We find that the first four models are transit-phase accelerating in the late-time universe, whereas the last one model shows only the accelerating phase of the expanding universe. We also discussed the information criteria for model selection (AIC and BIC) for the four models in the context of the standard ΛCDM model. Finally, we discussed the stability of the model in the context of the Hubble parameter and energy density.
Published Version
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