arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2302.04004gr-qcmath-phmath.MP
收藏

Schwarzschild-de Sitter时空宇宙学区域的非线性稳定性

On the non-linear stability of the Cosmological region of the Schwarzschild-de Sitter spacetime

Marica Minucci, Juan Antonio Valiente Kroon

AI总结:

本文利用扩展共形爱因斯坦场方程和共形高斯规范,证明了亚极端Schwarzschild-de Sitter时空宇宙学区域在共形边界附近的非线性稳定性,为宇宙学视界上的微扰稳定性论证奠定基础。

摘要:

本文利用基于扩展共形爱因斯坦场方程和共形高斯规范的技术,分析了亚极端Schwarzschild-de Sitter时空在共形边界附近的平稳区域中的非线性稳定性。该策略依赖于以下观察:这个精确解的宇宙学平稳区域可以被一族不相交的共形测地线所覆盖。因此,时空中宇宙学区域内合适的类空超曲面的未来依赖域可以用共形高斯规范来表示。随后,一个微扰论证使我们能够在共形边界附近以及远离宇宙学视界与共形边界相交的渐近点处证明存在性和稳定性结果。特别地,我们证明了亚极端Schwarzschild-de Sitter时空初始数据的足够小的微扰会产生爱因斯坦场方程的一个解,该解在共形边界处是正则的。本文的分析可以被视为朝着宇宙学视界上微扰数据的稳定性论证迈出的第一步。

英文摘要:

The non-linear stability of the sub-extremal Schwarzschild-de Sitter spacetime in the stationary region near the conformal boundary is analysed using a technique based on the extended conformal Einstein field equations and a conformal Gaussian gauge. This strategy relies on the observation that the Cosmological stationary region of this exact solution can be covered by a non-intersecting congruence of conformal geodesics. Thus, the future domain of dependence of suitable spacelike hypersurfaces in the Cosmological region of the spacetime can be expressed in terms of a conformal Gaussian gauge. A perturbative argument then allows us to prove existence and stability results close to the conformal boundary and away from the asymptotic points where the Cosmological horizon intersects the conformal boundary. In particular, we show that small enough perturbations of initial data for the sub-extremal Schwarzschild-de Sitter spacetime give rise to a solution to the Einstein field equations which is regular at the conformal boundary. The analysis in this article can be regarded as a first step towards a stability argument for perturbation data on the Cosmological horizons.

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。

↑