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| Natura: | Preprint |
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2024
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| Accesso online: | https://arxiv.org/abs/2401.14170 |
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| _version_ | 1866929584416489472 |
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| author | Huang, Lu Wang, Shao-Jiang Yu, Wang-Wei |
| author_facet | Huang, Lu Wang, Shao-Jiang Yu, Wang-Wei |
| contents | The standard model of modern cosmology might be cracked by the recent persistent hot debate on the Hubble-constant ($H_0$) tension, which manifests itself as the sound-horizon ($r_s$) tension or absolute-magnitude ($M_B$) tension if deeming the origin of the Hubble tension from modifying the early or late Universe, respectively. In this paper, we achieve a fully model-independent constraint (fitting a model-independent global parameterization to a model-independent inverse distant ladder with a model-independent high-redshift calibration) on late-time models with strong evidence against homogeneous new physics over the $Λ$-cold-dark-matter ($Λ$CDM) model. Further using this model-independent constraint to calibrate sufficiently local supernovae with corresponding late-time models extrapolated below the homogeneity scale, we find surprisingly that, although both $H_0$ tension and $M_B$ tension are absent in our local Universe, a combination of $H_0$ and $M_B$ as the intercept $a_B$ of the magnitude-redshift relation exhibits $3\sim 7σ$ tension even for the $Λ$CDM model. This $a_B$ tension seems to call for local-scale inhomogeneous new physics disguised as local observational systematics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_14170 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | No-go guide for the Hubble tension: late-time or local-scale new physics Huang, Lu Wang, Shao-Jiang Yu, Wang-Wei Cosmology and Nongalactic Astrophysics The standard model of modern cosmology might be cracked by the recent persistent hot debate on the Hubble-constant ($H_0$) tension, which manifests itself as the sound-horizon ($r_s$) tension or absolute-magnitude ($M_B$) tension if deeming the origin of the Hubble tension from modifying the early or late Universe, respectively. In this paper, we achieve a fully model-independent constraint (fitting a model-independent global parameterization to a model-independent inverse distant ladder with a model-independent high-redshift calibration) on late-time models with strong evidence against homogeneous new physics over the $Λ$-cold-dark-matter ($Λ$CDM) model. Further using this model-independent constraint to calibrate sufficiently local supernovae with corresponding late-time models extrapolated below the homogeneity scale, we find surprisingly that, although both $H_0$ tension and $M_B$ tension are absent in our local Universe, a combination of $H_0$ and $M_B$ as the intercept $a_B$ of the magnitude-redshift relation exhibits $3\sim 7σ$ tension even for the $Λ$CDM model. This $a_B$ tension seems to call for local-scale inhomogeneous new physics disguised as local observational systematics. |
| title | No-go guide for the Hubble tension: late-time or local-scale new physics |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2401.14170 |