EDSFD parametrization in $ f(R,T) $ gravity with linear curvature terms
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| _version_ | 1866929329256005632 |
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| author | Singh, J. K. Shaily Balhara, Harshna Ghosh, Sushant G. Maharaj, Sunil D. |
| author_facet | Singh, J. K. Shaily Balhara, Harshna Ghosh, Sushant G. Maharaj, Sunil D. |
| contents | 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, $ρ_ϕ$, 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, $Ω_{m0},Ω_{ϕ0}, H_0,$ and $α$. 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 $Λ$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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_11926 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | EDSFD parametrization in $ f(R,T) $ gravity with linear curvature terms Singh, J. K. Shaily Balhara, Harshna Ghosh, Sushant G. Maharaj, Sunil D. General Relativity and Quantum Cosmology 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, $ρ_ϕ$, 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, $Ω_{m0},Ω_{ϕ0}, H_0,$ and $α$. 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 $Λ$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. |
| title | EDSFD parametrization in $ f(R,T) $ gravity with linear curvature terms |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2311.11926 |