Cosmic expansion history analysis with Hubble parametrization in $Q^{n}$ gravity
Fuente:
arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866929217667596288 |
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| author | Koussour, M. Myrzakulov, N. |
| author_facet | Koussour, M. Myrzakulov, N. |
| contents | We propose a specialized parameterization for the Hubble parameter, inspired by $Λ$CDM cosmology, to investigate the cosmic expansion history of the Universe. This parameterization is employed to analyze the Universe's late-time behavior within the context of $Q^n$ gravity, where $Q$ represents non-metricity. By using data from 57 Hubble data points, 1048 supernova (SNe) data points, and 6 baryon acoustic oscillation (BAO) data points, we determine the optimal values for the model parameters. Additionally, we explore three distinct cosmological models based on the parameter $n$, specifically when it takes on the values of $0.55$, $1.5$, and $2.0$. The results of our analysis indicate that our proposed parameterization, along with the associated models for different values of $n$, predicts an accelerated cosmic expansion phase. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_10951 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Cosmic expansion history analysis with Hubble parametrization in $Q^{n}$ gravity Koussour, M. Myrzakulov, N. Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology We propose a specialized parameterization for the Hubble parameter, inspired by $Λ$CDM cosmology, to investigate the cosmic expansion history of the Universe. This parameterization is employed to analyze the Universe's late-time behavior within the context of $Q^n$ gravity, where $Q$ represents non-metricity. By using data from 57 Hubble data points, 1048 supernova (SNe) data points, and 6 baryon acoustic oscillation (BAO) data points, we determine the optimal values for the model parameters. Additionally, we explore three distinct cosmological models based on the parameter $n$, specifically when it takes on the values of $0.55$, $1.5$, and $2.0$. The results of our analysis indicate that our proposed parameterization, along with the associated models for different values of $n$, predicts an accelerated cosmic expansion phase. |
| title | Cosmic expansion history analysis with Hubble parametrization in $Q^{n}$ gravity |
| topic | Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2401.10951 |