Disforming scalar-tensor cosmology
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arXiv
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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866910437687164928 |
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| author | Faraoni, Valerio Zeyn, Carla |
| author_facet | Faraoni, Valerio Zeyn, Carla |
| contents | Disformal transformations of Friedmann-Lemaître-Robertson-Walker and Bianchi geometries are analyzed in the context of scalar-tensor gravity. Novel aspects discussed explicitly are the $3+1$ splitting, the effective fluid equivalent of the gravitational scalar, Bianchi models, stealth solutions, and de Sitter solutions with non-constant scalar field (which are signatures of scalar-tensor gravity). Both pure disformal transformations and more general ones are discussed, including those containing higher derivatives of the scalar field recently introduced in the literature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_00091 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Disforming scalar-tensor cosmology Faraoni, Valerio Zeyn, Carla General Relativity and Quantum Cosmology Disformal transformations of Friedmann-Lemaître-Robertson-Walker and Bianchi geometries are analyzed in the context of scalar-tensor gravity. Novel aspects discussed explicitly are the $3+1$ splitting, the effective fluid equivalent of the gravitational scalar, Bianchi models, stealth solutions, and de Sitter solutions with non-constant scalar field (which are signatures of scalar-tensor gravity). Both pure disformal transformations and more general ones are discussed, including those containing higher derivatives of the scalar field recently introduced in the literature. |
| title | Disforming scalar-tensor cosmology |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2401.00091 |