Modeling Dark Sector in Horndeski Gravity at First-Order Formalism
We investigate a cosmological scenario by finding solutions using first-order formalism in the Horndeski gravity that constrains the superpotential and implies that no free choice of scalar potential is allowed. Despite this, we show that a de Sitter phase at late-time cosmology can be realized, whe...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2019/3486805 |
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| _version_ | 1832554655059542016 |
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| author | F. F. Santos R. M. P. Neves F. A. Brito |
| author_facet | F. F. Santos R. M. P. Neves F. A. Brito |
| author_sort | F. F. Santos |
| collection | DOAJ |
| description | We investigate a cosmological scenario by finding solutions using first-order formalism in the Horndeski gravity that constrains the superpotential and implies that no free choice of scalar potential is allowed. Despite this, we show that a de Sitter phase at late-time cosmology can be realized, where the dark energy sector can be identified. The scalar field equation of state tends to the cosmological scenario at present time and allows us to conclude that it can simulate the dark energy in the Horndeski gravity. |
| format | Article |
| id | doaj-art-b0897cafb3a24da68f5cde10454b983e |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-b0897cafb3a24da68f5cde10454b983e2025-02-03T05:50:56ZengWileyAdvances in High Energy Physics1687-73571687-73652019-01-01201910.1155/2019/34868053486805Modeling Dark Sector in Horndeski Gravity at First-Order FormalismF. F. Santos0R. M. P. Neves1F. A. Brito2Departamento de Física, Universidade Federal da Paraíba, Caixa Postal 5008, 58051-970 João Pessoa PB, BrazilDepartamento de Física, Universidade Federal da Paraíba, Caixa Postal 5008, 58051-970 João Pessoa PB, BrazilDepartamento de Física, Universidade Federal da Paraíba, Caixa Postal 5008, 58051-970 João Pessoa PB, BrazilWe investigate a cosmological scenario by finding solutions using first-order formalism in the Horndeski gravity that constrains the superpotential and implies that no free choice of scalar potential is allowed. Despite this, we show that a de Sitter phase at late-time cosmology can be realized, where the dark energy sector can be identified. The scalar field equation of state tends to the cosmological scenario at present time and allows us to conclude that it can simulate the dark energy in the Horndeski gravity.http://dx.doi.org/10.1155/2019/3486805 |
| spellingShingle | F. F. Santos R. M. P. Neves F. A. Brito Modeling Dark Sector in Horndeski Gravity at First-Order Formalism Advances in High Energy Physics |
| title | Modeling Dark Sector in Horndeski Gravity at First-Order Formalism |
| title_full | Modeling Dark Sector in Horndeski Gravity at First-Order Formalism |
| title_fullStr | Modeling Dark Sector in Horndeski Gravity at First-Order Formalism |
| title_full_unstemmed | Modeling Dark Sector in Horndeski Gravity at First-Order Formalism |
| title_short | Modeling Dark Sector in Horndeski Gravity at First-Order Formalism |
| title_sort | modeling dark sector in horndeski gravity at first order formalism |
| url | http://dx.doi.org/10.1155/2019/3486805 |
| work_keys_str_mv | AT ffsantos modelingdarksectorinhorndeskigravityatfirstorderformalism AT rmpneves modelingdarksectorinhorndeskigravityatfirstorderformalism AT fabrito modelingdarksectorinhorndeskigravityatfirstorderformalism |