发表机构
Sun Yat-sen University(中山大学)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文证明爱因斯坦-欧拉系统球对称自相似坍缩产生的裸奇点,在无对称性的微小 $C^{1,\alpha}$ 引力扰动下不稳定,因声速低于光速,扰动可形成俘获面。
AI 中文摘要
我们研究了爱因斯坦-欧拉系统在球对称自相似坍缩中产生的裸奇点在引力扰动下的不稳定性。我们证明了初始共形度量的微小 $C^{1,\alpha}$ 扰动(无任何对称性)会导致俘获面的形成。一个关键点在于,声速严格低于光速,因此引力辐射能够在流体发展出任何奇点之前充分集中以形成俘获面。
英文摘要
We study the instability of the naked singularities arising in the spherically symmetric self-similar collapsing of the Einstein--Euler system under gravitational perturbations. We show that small $C^{1,α}$ perturbations (without any symmetries) of the initial conformal metric lead to trapped surface formation. One key point is that the speed of sound is strictly slower the the speed of light, so the gravitational radiation can become sufficiently concentrated to form a trapped surface before the fluid develops any singularity.
Comments58 pages, 2 figures