Reconstruction of symmteric teleparallel gravity with energy conditions
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866913787774238720 |
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| author | Mahmood, Irfan Sohail, Hira Ditta, Allah Shekh, S. H. Yadav, Anil Kumar |
| author_facet | Mahmood, Irfan Sohail, Hira Ditta, Allah Shekh, S. H. Yadav, Anil Kumar |
| contents | This research investigates the impact of modified gravity on cosmic scales, focusing on $f(Q)$ cosmology. By applying energy conditions, the study reconstructs various $f(Q)$ models, considering an accelerating Universe, quintessence, and a cosmological constant $Λ$. Using up-to-date observational data, including the Supernova Pantheon sample and cosmic chronometer data, Hubble constants $H_0$ are estimated as $70.37^{+0.84}_{-0.92}$ km/sec/Mpc (from $H(z)$ data) and $70.02^{+0.44}_{-0.25}$ km/sec/Mpc (from pantheon compilation of SN Ia data). The matter energy density parameter ($Ω_{0m}$) is calculated as $0.26^{0.015}_{-0.010}$(OHD) and $0.27^{0.025}_{-0.014}$(SN Ia). Furthermore, as a function of redshift $z$, explicit expressions of $f(Q)$ and the EOS parameter $ω$ are produced, and their graphical analysis describes the late time acceleration of the Universe without the usage of dark energy. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_16527 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Reconstruction of symmteric teleparallel gravity with energy conditions Mahmood, Irfan Sohail, Hira Ditta, Allah Shekh, S. H. Yadav, Anil Kumar General Relativity and Quantum Cosmology This research investigates the impact of modified gravity on cosmic scales, focusing on $f(Q)$ cosmology. By applying energy conditions, the study reconstructs various $f(Q)$ models, considering an accelerating Universe, quintessence, and a cosmological constant $Λ$. Using up-to-date observational data, including the Supernova Pantheon sample and cosmic chronometer data, Hubble constants $H_0$ are estimated as $70.37^{+0.84}_{-0.92}$ km/sec/Mpc (from $H(z)$ data) and $70.02^{+0.44}_{-0.25}$ km/sec/Mpc (from pantheon compilation of SN Ia data). The matter energy density parameter ($Ω_{0m}$) is calculated as $0.26^{0.015}_{-0.010}$(OHD) and $0.27^{0.025}_{-0.014}$(SN Ia). Furthermore, as a function of redshift $z$, explicit expressions of $f(Q)$ and the EOS parameter $ω$ are produced, and their graphical analysis describes the late time acceleration of the Universe without the usage of dark energy. |
| title | Reconstruction of symmteric teleparallel gravity with energy conditions |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2311.16527 |