首页> 外文期刊>Annales Henri Poincare >Pre-big Bang Geometric Extensions of Inflationary Cosmologies
【24h】

Pre-big Bang Geometric Extensions of Inflationary Cosmologies

机译:通胀宇宙的预大爆炸几何扩展

获取原文
获取原文并翻译 | 示例
           

摘要

Robertson-Walker spacetimes within a large class are geometrically extended to larger cosmologies that include spacetime points with zero and negative cosmological times. In the extended cosmologies, the big bang is lightlike, and though singular, it inherits some geometric structure from the original spacetime. Spacelike geodesics are continuous across the cosmological time zero submanifold which is parameterized by the radius of Fermi space slices, i.e., by the proper distances along spacelike geodesics from a comoving observer to the big bang. The continuous extension of the metric, and the continuously differentiable extension of the leading Fermi metric coefficient of the observer, restrict the geometry of spacetime points with pre-big bang cosmological time coordinates. In our extensions the big bang is two dimensional in a certain sense, consistent with some findings in quantum gravity.
机译:大类内的Robertson-Walker Spacetime几何上延伸到更大的宇宙学,其中包括零和负宇宙的时空点。 在扩展的宇宙中,大爆炸是轻的,虽然是单数,但它继承了一些从原始时空的几何结构。 Spacelike Geodesics在宇宙学时间是连续的Zero Zero,其由Fermi Space Slics的半径参数化,即,通过从Comoving Observer到Big Bang的分数沿着空间的距离的适当距离。 度量的连续延伸,以及观察者的前导费米度量系数的连续可微差延伸,限制了与大爆炸宇宙学时间坐标的空间点的几何形状。 在我们的延伸中,大爆炸是一定的意义上的二维,与量子重力的一些发现一致。

著录项

  • 来源
    《Annales Henri Poincare》 |2018年第2期|共42页
  • 作者

    Klein David; Reschke Jake;

  • 作者单位

    Calif State Univ Northridge Dept Math Interdisciplinary Res Inst Sci Northridge CA 91330 USA;

    Univ Calif Davis Dept Math Davis CA 95616 USA;

  • 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

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