Neutrino Interactions with perturbed Rastall Gravity: A Novel Approach to Reducing the Hubble Tension
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arXiv
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866908449245233152 |
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| author | Yarahmadi, Muhammad |
| author_facet | Yarahmadi, Muhammad |
| contents | We investigate the cosmological implications of coupling neutrinos to perturbed Rastall gravity, focusing on its impact on the Hubble constant ($H_0$) and the associated tension between early- and late-universe measurements with MCMC and PINN method. Utilizing observational data from the Cosmic Microwave Background (CMB), Cosmic Chronometers (CC), Baryon Acoustic Oscillations (BAO), and the Pantheon+ Type Ia supernovae, CMB Lensing, we perform a detailed statistical analysis. Our findings demonstrate that the Rastall model provides an improved fit to the data compared to the standard $Λ$CDM model, as indicated by lower Akaike Information Criterion (AIC) values in both early and late-universe regimes. The model introduces a deviation parameter $α$, which remains consistent with existing literature and differs across epochs, supporting a dynamic gravitational framework. Combining all datasets, the Rastall model yields $H_0 = 70.23 \pm 2.01$ km,s$^{-1}$,Mpc$^{-1}$, significantly reducing the tension with Planck ($1.34σ$) and SH0ES ($1.16σ$) compared to the $\sim 4σ$ discrepancy in $Λ$CDM. Additional dataset combinations confirm this alleviation, with Planck tensions consistently below $1.6σ$. Overall, our results highlight Rastall gravity with neutrino coupling as a promising alternative to $Λ$CDM, capable of addressing current cosmological tensions while aligning with observational data, it can be concluded that the Hubble tension may be resolved. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_08871 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Neutrino Interactions with perturbed Rastall Gravity: A Novel Approach to Reducing the Hubble Tension Yarahmadi, Muhammad General Relativity and Quantum Cosmology We investigate the cosmological implications of coupling neutrinos to perturbed Rastall gravity, focusing on its impact on the Hubble constant ($H_0$) and the associated tension between early- and late-universe measurements with MCMC and PINN method. Utilizing observational data from the Cosmic Microwave Background (CMB), Cosmic Chronometers (CC), Baryon Acoustic Oscillations (BAO), and the Pantheon+ Type Ia supernovae, CMB Lensing, we perform a detailed statistical analysis. Our findings demonstrate that the Rastall model provides an improved fit to the data compared to the standard $Λ$CDM model, as indicated by lower Akaike Information Criterion (AIC) values in both early and late-universe regimes. The model introduces a deviation parameter $α$, which remains consistent with existing literature and differs across epochs, supporting a dynamic gravitational framework. Combining all datasets, the Rastall model yields $H_0 = 70.23 \pm 2.01$ km,s$^{-1}$,Mpc$^{-1}$, significantly reducing the tension with Planck ($1.34σ$) and SH0ES ($1.16σ$) compared to the $\sim 4σ$ discrepancy in $Λ$CDM. Additional dataset combinations confirm this alleviation, with Planck tensions consistently below $1.6σ$. Overall, our results highlight Rastall gravity with neutrino coupling as a promising alternative to $Λ$CDM, capable of addressing current cosmological tensions while aligning with observational data, it can be concluded that the Hubble tension may be resolved. |
| title | Neutrino Interactions with perturbed Rastall Gravity: A Novel Approach to Reducing the Hubble Tension |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2401.08871 |