Fluid and scalar field representations in the Brans-Dicke theory: cosmological scenarios
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| Format: | Preprint |
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2025
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| _version_ | 1866913772609732608 |
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| author | Alves, Tiago H. B. Fabris, Júlio C. Guimarães, Luiz Filipe |
| author_facet | Alves, Tiago H. B. Fabris, Júlio C. Guimarães, Luiz Filipe |
| contents | The Brans-Dicke scalar-tensor cosmological models are studied in both Einstein and Jordan frames, using hydrodynamical and self-interacting scalar field representations of the energy-momentum tensor, leading to the same background solutions. The main features of the corresponding cosmological scenarios are determined. In many cases, we identify a transition from decelerated to accelerated regimes. The properties of the self-interacting scalar field, including the corresponding potential, are determined. Finally, some possible realistic configurations are analyzed. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2504_01710 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Fluid and scalar field representations in the Brans-Dicke theory: cosmological scenarios Alves, Tiago H. B. Fabris, Júlio C. Guimarães, Luiz Filipe General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory The Brans-Dicke scalar-tensor cosmological models are studied in both Einstein and Jordan frames, using hydrodynamical and self-interacting scalar field representations of the energy-momentum tensor, leading to the same background solutions. The main features of the corresponding cosmological scenarios are determined. In many cases, we identify a transition from decelerated to accelerated regimes. The properties of the self-interacting scalar field, including the corresponding potential, are determined. Finally, some possible realistic configurations are analyzed. |
| title | Fluid and scalar field representations in the Brans-Dicke theory: cosmological scenarios |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory |
| url | https://arxiv.org/abs/2504.01710 |