Dynamical analysis in regularized 4D Einstein–Gauss–Bonnet gravity with non-minimal coupling
Abstract We investigate the regularized four-dimensional Einstein–Gauss–Bonnet (4DEGB) gravity with a non-minimal scalar coupling function, which is an extension of the regularized 4DEGB theory. By introducing non-minimal coupling to the Gauss-Bonnet term, we demonstrate the additional contribution...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-03-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-023-11346-9 |
| _version_ | 1797836267118919680 |
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| author | Bilguun Bayarsaikhan Sunly Khimphun Phearun Rithy Gansukh Tumurtushaa |
| author_facet | Bilguun Bayarsaikhan Sunly Khimphun Phearun Rithy Gansukh Tumurtushaa |
| author_sort | Bilguun Bayarsaikhan |
| collection | DOAJ |
| description | Abstract We investigate the regularized four-dimensional Einstein–Gauss–Bonnet (4DEGB) gravity with a non-minimal scalar coupling function, which is an extension of the regularized 4DEGB theory. By introducing non-minimal coupling to the Gauss-Bonnet term, we demonstrate the additional contribution to the dynamical equations which is otherwise absent in the dimensionally regularized theory. Furthermore, we analyze the stability of the system by using the dynamical system approach based on fixed points. Then, we consider time evolution to investigate the history of the universe and to constrain observational data to obtain the cosmological parameters of the model. |
| first_indexed | 2024-04-09T15:07:09Z |
| format | Article |
| id | doaj.art-2cf29c895e314cb8a0c0f0670204fb6f |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-09T15:07:09Z |
| publishDate | 2023-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-2cf29c895e314cb8a0c0f0670204fb6f2023-04-30T11:25:39ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522023-03-0183311010.1140/epjc/s10052-023-11346-9Dynamical analysis in regularized 4D Einstein–Gauss–Bonnet gravity with non-minimal couplingBilguun Bayarsaikhan0Sunly Khimphun1Phearun Rithy2Gansukh Tumurtushaa3Institute for Theoretical Physics, ELTE Eotvos Lorand UniversityGraduate School of Science, Royal University of Phnom PenhGraduate School of Science, Royal University of Phnom PenhDepartment of Science Education, Jeju National UniversityAbstract We investigate the regularized four-dimensional Einstein–Gauss–Bonnet (4DEGB) gravity with a non-minimal scalar coupling function, which is an extension of the regularized 4DEGB theory. By introducing non-minimal coupling to the Gauss-Bonnet term, we demonstrate the additional contribution to the dynamical equations which is otherwise absent in the dimensionally regularized theory. Furthermore, we analyze the stability of the system by using the dynamical system approach based on fixed points. Then, we consider time evolution to investigate the history of the universe and to constrain observational data to obtain the cosmological parameters of the model.https://doi.org/10.1140/epjc/s10052-023-11346-9 |
| spellingShingle | Bilguun Bayarsaikhan Sunly Khimphun Phearun Rithy Gansukh Tumurtushaa Dynamical analysis in regularized 4D Einstein–Gauss–Bonnet gravity with non-minimal coupling European Physical Journal C: Particles and Fields |
| title | Dynamical analysis in regularized 4D Einstein–Gauss–Bonnet gravity with non-minimal coupling |
| title_full | Dynamical analysis in regularized 4D Einstein–Gauss–Bonnet gravity with non-minimal coupling |
| title_fullStr | Dynamical analysis in regularized 4D Einstein–Gauss–Bonnet gravity with non-minimal coupling |
| title_full_unstemmed | Dynamical analysis in regularized 4D Einstein–Gauss–Bonnet gravity with non-minimal coupling |
| title_short | Dynamical analysis in regularized 4D Einstein–Gauss–Bonnet gravity with non-minimal coupling |
| title_sort | dynamical analysis in regularized 4d einstein gauss bonnet gravity with non minimal coupling |
| url | https://doi.org/10.1140/epjc/s10052-023-11346-9 |
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