http://arxiv.org/abs/2301.06328
The rising concern in the Hubble constant tension ($H_0$ tension) of the cosmological models motivates the scientific community to search for alternative cosmological scenarios that could resolve the $H_0$ tension. In this regard, we aim to work on a torsion-based modified theory of gravity which is an alternative description to the coherence model. We find an analytic solution of the Hubble parameter using a linear Lagrangian function of torsion $T$ and trace of energy-momentum tensor $\mathcal{T}$ for the dust case. Further, we constrain the cosmological and model parameters; to do that, we use Hubble and Pantheon samples and Markov Chain Monte Carlo (MCMC) simulation through Bayesian statistics. We obtain the values of Hubble constant as $H_0= 69.9\pm 6.8$ km$s^{-1}$ Mp$c^{-1}$, $H_0= 70.3\pm 6.3$ km$s^{-1}$ Mp$c^{-1}$, and $H_0= 71.4\pm 6.3$ km$s^{-1}$ Mp$c^{-1}$ at confidence level (CL), for Hubble, Pantheon, and their combine analysis, respectively. These outputs of $H_0$ for our model align with the recent observational measurements of $H_0$. In addition, we test the $Om$ diagnostic to check our model’s dark energy profile.
S. Mandal, S. Mishra and P. Sahoo
Wed, 18 Jan 23
28/133
Comments: Comments are welcome