English

Transit cosmological models in Myrzakulov F(R,T) gravity theory

General Relativity and Quantum Cosmology 2024-08-14 v2

Abstract

In the present paper, we investigate some exact cosmological models in Myrzakulov F(R,T)F(R,T) gravity theory. We have considered the arbitrary function F(R,T)=R+λTF(R, T)=R+\lambda T where λ\lambda is an arbitrary constant, R,TR, T are respectively, the Ricci-scalar curvature and the torsion. We have solved the field equations in a flat FLRW spacetime manifold for Hubble parameter and using the MCMC analysis, we have estimated the best fit values of model parameters with 1σ,2σ,3σ1-\sigma, 2-\sigma, 3-\sigma regions, for two observational datasets like H(z)H(z) and Pantheon SNe Ia datasets. Using these best fit values of model parameters, we have done the result analysis and discussion of the model. We have found a transit phase decelerating-accelerating universe model with transition redshifts zt=0.44380.790+0.1008,0.36510.0904+0.1644z_{t}=0.4438_{-0.790}^{+0.1008}, 0.3651_{-0.0904}^{+0.1644}. The effective dark energy equation of state varies as 1ωde0.5176-1\le\omega_{de}\le-0.5176 and the present age of the universe is found as t0=13.84860.0640+0.1005,12.01350.2743+0.6206t_{0}=13.8486_{-0.0640}^{+0.1005}, 12.0135_{-0.2743}^{+0.6206} Gyrs, respectively for two datasets.

Keywords

Cite

@article{arxiv.2401.00686,
  title  = {Transit cosmological models in Myrzakulov F(R,T) gravity theory},
  author = {Dinesh Chandra Maurya and Ratbay Myrzakulov},
  journal= {arXiv preprint arXiv:2401.00686},
  year   = {2024}
}

Comments

22 pages, 11 figures