Cosmological constraints on scale-dependent cosmology
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2022
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| _version_ | 1866917677208961024 |
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| author | Alvarez, Pedro D. Koch, Benjamin Laporte, Cristobal Rincon, Angel |
| author_facet | Alvarez, Pedro D. Koch, Benjamin Laporte, Cristobal Rincon, Angel |
| contents | This paper examines a cosmological model of scale-dependent gravity. The gravitational action is taken to be the Einstein-Hilbert term supplemented with a cosmological constant, where the couplings, $G_k$ and $Λ_k$, run with the energy scale $k$. %
Also, notice that, by construction, our formalism recovers general relativity when in the limit of constant Newton's coupling. %
Two sub-models based on the scale-dependent cosmological model are confronted with recent observational data from:
i) the Hubble parameter $H(z)$,
ii) distance modulus $μ(z)$, and iii) baryon acoustic scale evolution as functions of redshift (BAO). %
The viability of the model is discussed, obtaining the best-fit parameters and the maximum likelihood contours for these observables. Finally, a joint analysis is performed for $H(z)$+$μ(z)$+BAO. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2210_11853 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Cosmological constraints on scale-dependent cosmology Alvarez, Pedro D. Koch, Benjamin Laporte, Cristobal Rincon, Angel General Relativity and Quantum Cosmology This paper examines a cosmological model of scale-dependent gravity. The gravitational action is taken to be the Einstein-Hilbert term supplemented with a cosmological constant, where the couplings, $G_k$ and $Λ_k$, run with the energy scale $k$. % Also, notice that, by construction, our formalism recovers general relativity when in the limit of constant Newton's coupling. % Two sub-models based on the scale-dependent cosmological model are confronted with recent observational data from: i) the Hubble parameter $H(z)$, ii) distance modulus $μ(z)$, and iii) baryon acoustic scale evolution as functions of redshift (BAO). % The viability of the model is discussed, obtaining the best-fit parameters and the maximum likelihood contours for these observables. Finally, a joint analysis is performed for $H(z)$+$μ(z)$+BAO. |
| title | Cosmological constraints on scale-dependent cosmology |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2210.11853 |