论文标题
正式化$ 4D $ EINSTEIN-GAUSS-BONNET重力的动力分析与非最小耦合
Dynamical analysis in regularized $4D$ Einstein-Gauss-Bonnet gravity with non-minimal coupling
论文作者
论文摘要
我们使用非最小标量耦合函数调查了正规化的四维爱因斯坦 - 加斯 - 鲍尼特（$ 4D $ EGB）重力，这是正规化$ 4D $ EGB理论的扩展。通过将非最小耦合引入高斯式术语，我们证明了对动力学方程的额外贡献，这些方程在尺寸调节的理论中否则不存在。此外，我们通过使用基于固定点的动态系统方法来分析系统的稳定性。然后，我们考虑使用观察数据来研究宇宙历史和约束的时间演变，以获得模型的宇宙学参数。
We investigate the regularized four-dimensional Einstein-Gauss-Bonnet ($4D$ EGB) gravity with a non-minimal scalar coupling function, which is an extension of the regularized $4D$ EGB 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 the time evolution to investigate the history of the universe and constraint with observational data to obtain the cosmological parameters of the model.
