论文标题
通过Kerr-Schild的De Snotterization
de Sitterization via Kerr-Schild
论文作者
论文摘要
在空间上，宇宙学的空间空间是在正面宇宙学常数的情况下演变的，并且满足某些合理的能量条件的物质，通常会渐近地接近DE Sitter几何形状（至少在本地）接近。在这项工作中，我们提出了一种表征这种现象的另一种方法。我们专注于承认广义的Kerr-Schild代表的一部分。我们认为可以选择定义这种表示形式的函数，以便它们的渐近行为使朝de Sitter时空的演变通过表示。我们验证了我们对宇宙学空间的Kantowski-Sachs家族的主张。
Spatially homogeneous cosmological spacetimes, evolving in the presence of a positive cosmological constant and matter satisfying some reasonable energy conditions, typically approach the de Sitter geometry asymptotically (at least locally). In this work, we propose an alternate way to characterize this phenomena. We focus on a subset of such models admitting a generalized Kerr-Schild representation. We argue that the functions which define such a representation can be chosen, such that, their asymptotic behavior make the evolution towards the de Sitter spacetime manifest through the representation. We verify our claim for the Kantowski-Sachs family of cosmological spacetimes.
