Hubble Tension and Gravitational Self-Interaction
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866913403818213376 |
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| author | Sargent, Corey Deur, Alexandre Terzic, Balsa |
| author_facet | Sargent, Corey Deur, Alexandre Terzic, Balsa |
| contents | One of the most important problems vexing the $Λ$CDM cosmological model is the Hubble tension. It arises from the fact that measurements of the present value of the Hubble parameter performed with low-redshift quantities, e.g., the Type IA supernova, tend to yield larger values than measurements from quantities originating at high-redshift, e.g., fits of cosmic microwave background radiation. It is becoming likely that the discrepancy, currently standing at $5σ$, is not due to systematic errors in the measurements. Here we explore whether the self-interaction of gravitational fields in General Relativity, which are traditionally neglected when studying the evolution of the universe, can explain the tension. We find that with field self-interaction accounted for, both low- and high-redshift data are simultaneously well-fitted, thereby showing that gravitational self-interaction could explain the Hubble tension. Crucially, this is achieved without introducing additional parameters. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2301_10861 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Hubble Tension and Gravitational Self-Interaction Sargent, Corey Deur, Alexandre Terzic, Balsa Cosmology and Nongalactic Astrophysics One of the most important problems vexing the $Λ$CDM cosmological model is the Hubble tension. It arises from the fact that measurements of the present value of the Hubble parameter performed with low-redshift quantities, e.g., the Type IA supernova, tend to yield larger values than measurements from quantities originating at high-redshift, e.g., fits of cosmic microwave background radiation. It is becoming likely that the discrepancy, currently standing at $5σ$, is not due to systematic errors in the measurements. Here we explore whether the self-interaction of gravitational fields in General Relativity, which are traditionally neglected when studying the evolution of the universe, can explain the tension. We find that with field self-interaction accounted for, both low- and high-redshift data are simultaneously well-fitted, thereby showing that gravitational self-interaction could explain the Hubble tension. Crucially, this is achieved without introducing additional parameters. |
| title | Hubble Tension and Gravitational Self-Interaction |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2301.10861 |