EDSFD parametrization in $ f(R,T) $ gravity with linear curvature terms
| Autor: | Singh, J. K., Shaily, Balhara, Harshna, Ghosh, Sushant G., Maharaj, Sunil D. |
|---|---|
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Physics of the Dark Universe, 2024 |
| Druh dokumentu: | Working Paper |
| Popis: | This paper investigates the flat Friedmann-Lema$\hat{\imath}$tre-Robertson-Walker (FLRW) cosmological model using a suitable parameterization represented as a differential equation concerning the energy density of the scalar field, $\rho_{\phi}$, in the context of $f(R,T)$ gravity theory. This parameterization is known as the Energy Density Scalar Field Differential Equation (EDSFD) parametrization. It results in a solution of the Hubble parameter containing four model parameters, namely, $\Omega_{m0},\Omega_{\phi 0}, H_0,$ and $\alpha$. To constrain the model parameters, $77$ data points from the Hubble dataset, $1048$ points from the Pantheon dataset, and $6$ data points from BAO are used. Using the constrained values, we analyze and compare our model with the standard $\Lambda$CDM model. The evolution of the physical parameters, which includes the deceleration parameter, density parameter, Equation of State (EoS) for Dark Energy, and $Om(z)$ diagnostic, are discussed. Comment: 16 pages, 18 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|