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Examples of Naked Singularity Formation in Higher-Dimensional Einstein-Vacuum Spacetimes

机译:高维爱因斯坦 - 真空空间中赤裸奇异性形成的实例

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摘要

The vacuum Einstein equations in dimensions are shown to admit solutions describing naked singularity formation in gravitational collapse from nonsingular asymptotically locally flat initial data that contain no trapped surface. We present a class of specific examples with topology . Thanks to the Kaluza-Klein dimensional reduction, these examples are constructed by lifting continuously self-similar solutions of the 4-dimensional Einstein-scalar field system with a negative exponential potential. The latter solutions are obtained by solving a 3-dimensional autonomous system of first-order ordinary differential equations with a combined analytic and numerical approach. Their existence provides a new test-bed for weak cosmic censorship in higher-dimensional gravity. In addition, we point out that a similar attempt of lifting Christodoulou's naked singularity solutions of massless scalar fields fails to capture formation of naked singularities in 4 + 1 dimensions, due to a diverging Kretschmann scalar in the initial data.
机译:尺寸中的真空爱因斯坦方程被示出为承认,解释在不含截图表面的非呈渐近局部扁平初始数据中的引力塌陷中的裸奇异性形成的解决方案。我们展示了一类具有拓扑的具体例子。由于Kaluza-Klein尺寸减少,这些示例是通过用负指数电位提升4维爱因斯坦标量域系统的连续自我相似的解决方案来构造。通过求解具有组合分析和数值方法的一阶常微分方程的三维自主系统来获得后一种解决方案。他们的存在提供了一种新的测试床,用于弱宇宙审查,以高维重力。此外,我们指出,由于初始数据中的kretschmann标量在初始数据中发散,类似的尝试无大抽标标量的赤字奇点解决方案未能捕获4 + 1维度的形成。

著录项

  • 来源
    《Annales Henri Poincare》 |2018年第2期|共33页
  • 作者

    An Xinliang; Zhang Xuefeng;

  • 作者单位

    Univ Toronto Dept Math Toronto ON M5S 2E4 Canada;

    Sun Yat Sen Univ Sch Phys &

    Astron TianQin Res Ctr Gravitat Phys Zhuhai 519082 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 理论物理学;
  • 关键词

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