论文标题
爱因斯坦高斯 - 骨网中的动力系统
Dynamical systems in Einstein Gauss-Bonnet gravity
论文作者
论文摘要
在这项工作中，我们探讨了宇宙学迷你uspace中爱因斯坦 - 加斯 - 邦网理论的动态系统相空间。这种方法通过扁平的弗里德曼·莱玛·罗伯逊 - 罗伯逊 - 罗伯逊步行者的时空结合了理论的主要特征。我们分析该系统中特征的关键点以评估其稳定性标准。由于高斯河网不变的四阶贡献以及标量场的二阶贡献以及其耦合动力学，因此这种标量调节重力的相位空间非常丰富。与文献中的先前作品相比，我们发现其他关键点对于理解这类引力模型中标准背景宇宙学的更大演变可能很重要。
In this work we explore the dynamical system phase space of Einstein-Gauss-Bonnet theory in the cosmological minisuperspace. This approach binds the main features of the theory through a system of autonomous differential equations, in the context of a flat Friedmann-Lemaître-Robertson-Walker spacetime. We analyze the critical points that feature in this system to assess their stability criteria. The phase space of this form of scalar-tensor gravity is very rich due to the fourth-order contributions of the Gauss-Bonnet invariant together with the second order contribution of the scalar field together with their coupling dynamics. We find additional critical points as compared with previous works in the literature which may be important for understanding the larger evolution of standard background cosmology within this class of gravitational models.
