https://doi.org/10.1140/epjc/s10052-023-11346-9
Regular Article - Theoretical Physics
Dynamical analysis in regularized 4D Einstein–Gauss–Bonnet gravity with non-minimal coupling
1
Institute for Theoretical Physics, ELTE Eotvos Lorand University, Pazmany Peter setany 1/A, 1117, Budapest, Hungary
2
Institute of Physics and Technology, Mongolian Academy of Sciences, 13330, Ulaanbaatar, Mongolia
3
Graduate School of Science, Royal University of Phnom Penh, 12150, Phnom Penh, Cambodia
4
Department of Science Education, Jeju National University, 63243, Jeju, Korea
Received:
7
December
2022
Accepted:
19
February
2023
Published online:
21
March
2023
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.
© The Author(s) 2023
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