Big Bang Nucleosynthesis constraints on the Energy-Momentum Squared Gravity: The $\mathbb{T}^{2}$ model
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866915170488418304 |
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| author | Jang, Dukjae Gangopadhyay, Mayukh R. Cheoun, Myung-Ki Kajino, Toshitaka Sami, M. |
| author_facet | Jang, Dukjae Gangopadhyay, Mayukh R. Cheoun, Myung-Ki Kajino, Toshitaka Sami, M. |
| contents | Scale-independent energy-momentum squared gravity (EMSG) allows different gravitational couplings for different types of sources and has been proven to have interesting implications in cosmology. In this paper, the Big Bang Nucleosynthesis (BBN) formalism and the latest observational constraints on nuclear abundances are being used to put bounds on this class of modified gravity models. Using the tight constraint from BBN on the correction term in the Friedmann equation in EMSG scenario, we report the allowed deviation from the standard cosmic expansion rate. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_01210 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Big Bang Nucleosynthesis constraints on the Energy-Momentum Squared Gravity: The $\mathbb{T}^{2}$ model Jang, Dukjae Gangopadhyay, Mayukh R. Cheoun, Myung-Ki Kajino, Toshitaka Sami, M. Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology Nuclear Theory Scale-independent energy-momentum squared gravity (EMSG) allows different gravitational couplings for different types of sources and has been proven to have interesting implications in cosmology. In this paper, the Big Bang Nucleosynthesis (BBN) formalism and the latest observational constraints on nuclear abundances are being used to put bounds on this class of modified gravity models. Using the tight constraint from BBN on the correction term in the Friedmann equation in EMSG scenario, we report the allowed deviation from the standard cosmic expansion rate. |
| title | Big Bang Nucleosynthesis constraints on the Energy-Momentum Squared Gravity: The $\mathbb{T}^{2}$ model |
| topic | Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology Nuclear Theory |
| url | https://arxiv.org/abs/2402.01210 |