论文标题
动力学重力编织理论中的幻影吸引子：动态系统方法
Phantom attractors in Kinetic Gravity Braiding theories: a dynamical system approach
论文作者
论文摘要
我们修改了标量场理论的扩展历史，称为动力学重力编织。这些理论是众所周知的，因为当相应的Lagrangian在标量领域不断变化的情况下不变时，将宇宙扩展到未来的自我调整de Sitter状态。然而，这并不是这些移动对称模型的唯一未来命运。使用动力学系统公式，我们表明，未来的宇宙学奇异性也可以在此框架中出现。此外，我们提出了明确的例子，在该理论的配置空间中的未来吸引子对应于大裂口奇点。
We revise the expansion history of the scalar field theories known as Kinetic Gravity Braiding. These theories are well-known for the possibility of driving the expansion of the cosmos towards a future self-tuning de Sitter state when the corresponding Lagrangian is invariant under constant shifts in the scalar field. Nevertheless, this is not the only possible future fate of these shift-symmetric models. Using a dynamical system formulation we show that future cosmological singularities can also appear in this framework. Moreover, we present explicit examples where the future attractor in the configuration space of the theory corresponds to a big rip singularity.
