...
首页> 外文期刊>Journal of Mathematical Physics >Gowdy-symmetric cosmological models with Cauchy horizons ruled by non-closed null generators
【24h】

Gowdy-symmetric cosmological models with Cauchy horizons ruled by non-closed null generators

机译:由非闭合零生成器控制的柯西视域的Gowdy对称宇宙学模型

获取原文
获取原文并翻译 | 示例
           

摘要

Smooth Gowdy-symmetric generalized Taub-NUT solutions are a class of inhomogeneous cosmological models with spatial three-sphere topology. They have a past Cauchy horizon with closed null-generators, and they have been shown to develop a second, regular Cauchy horizon in the future, unless in special, well-defined singular cases. Here we generalize these models to allow for past Cauchy horizons ruled by non-closed null generators. In particular, we show local and global existence of such a class of solutions with two functional degrees of freedom. This removes a periodicity condition for the asymptotic data at the past Cauchy horizon that was required before. Moreover, we derive a three-parametric family of exact solutions within that class and study its properties. Published by AIP Publishing.
机译:光滑Gowdy对称广义Taub-NUT解是一类具有空间三球拓扑的不均匀宇宙学模型。它们具有过去的柯西视野和封闭的空发生器,并且已经证明,它们会在将来发展出第二个常规柯西视野,除非在特殊的,定义明确的奇异情况下。在这里,我们对这些模型进行了概括,以考虑到过去非封闭式空发生器所产生的柯西视界。特别是,我们显示了具有两个功能自由度的此类解决方案的局部和全局存在。这消除了过去在柯西视界之前所需的渐近数据的周期性条件。此外,我们在该类中派生出一个三参数精确解决方案族,并研究其性质。由AIP Publishing发布。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号