The consequence of higher-order curvature-based constraints on $ f(R, L_m) $ gravity
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866913484659228672 |
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| author | Singh, J. K. Shaily Singh, Akanksha Balhara, Harshna Santos, Joao R. L. |
| author_facet | Singh, J. K. Shaily Singh, Akanksha Balhara, Harshna Santos, Joao R. L. |
| contents | In this investigation, we perform an observational statistical analysis in the theory of $ f(R, L_m) $ gravity. The proposed theoretical model is based on the Ricci scalar's non-linear contribution. We use a distinct parameterization for the deceleration parameter and constrain the model parameters by using various observational data. To determine the best-fit model for the cosmological parameters, we use different observational datasets such as the Hubble Space Telescope, the Pantheon Supernova Survey, the Gold dataset, the Gamma-Ray Burst (GRB), and the Baryon Acoustic Oscillations (BAO). Furthermore, we study the late-time cosmic evolution of the Universe in detail and examine the implications of the constraint values on cosmological parameters. Additionally, we conduct a thorough comparison with the standard cosmological model $ Λ$CDM and other standard models obtained by Odintsov et al. \cite{Odintsov:2023cli, Odintsov:2024lid} to examine the validity of our proposed model in the low-redshift regimes. Finally, we find that the proposed model encapsulates an intriguing transition from early deceleration at high redshift to acceleration at low redshift, a quintessence dark energy scenario, and convergence towards the well-established $ Λ$CDM model in late-time Universe's evolution. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2408_16038 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The consequence of higher-order curvature-based constraints on $ f(R, L_m) $ gravity Singh, J. K. Shaily Singh, Akanksha Balhara, Harshna Santos, Joao R. L. General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics In this investigation, we perform an observational statistical analysis in the theory of $ f(R, L_m) $ gravity. The proposed theoretical model is based on the Ricci scalar's non-linear contribution. We use a distinct parameterization for the deceleration parameter and constrain the model parameters by using various observational data. To determine the best-fit model for the cosmological parameters, we use different observational datasets such as the Hubble Space Telescope, the Pantheon Supernova Survey, the Gold dataset, the Gamma-Ray Burst (GRB), and the Baryon Acoustic Oscillations (BAO). Furthermore, we study the late-time cosmic evolution of the Universe in detail and examine the implications of the constraint values on cosmological parameters. Additionally, we conduct a thorough comparison with the standard cosmological model $ Λ$CDM and other standard models obtained by Odintsov et al. \cite{Odintsov:2023cli, Odintsov:2024lid} to examine the validity of our proposed model in the low-redshift regimes. Finally, we find that the proposed model encapsulates an intriguing transition from early deceleration at high redshift to acceleration at low redshift, a quintessence dark energy scenario, and convergence towards the well-established $ Λ$CDM model in late-time Universe's evolution. |
| title | The consequence of higher-order curvature-based constraints on $ f(R, L_m) $ gravity |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2408.16038 |