非均匀Nariai类宇宙模型的临界性
Criticality of inhomogeneous Nariai-like cosmological models
摘要：
本文构造并研究了具有正宇宙学常数的真空中的Einstein方程的解，它可以看作是Nariai宇宙学模型的非齐次推广.与这个纳里埃时空类似，我们的解处于引力坍缩和类德西特指数膨胀之间的边界。我们的研究重点特别是有趣的振荡动力学，我们发现。我们的调查是通过分析（使用启发式模式分析参数）和数值（使用我们最近引入的数值基础设施）进行的。
英文摘要：
In this paper, we construct and study solutions of Einstein's equations in vacuum with a positive cosmological constant which can be considered as inhomogeneous generalizations of the Nariai cosmological model. Similar to this Nariai spacetime, our solutions are at the borderline between gravitational collapse and de-Sitter-like exponential expansion. Our studies focus in particular on the intriguing oscillatory dynamics which we discover. Our investigations are carried out both analytically (using heuristic mode analysis arguments) and numerically (using the numerical infrastructure recently introduced by us).
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
