Cosmological brane systems in warped spacetime
Cosmological brane systems in warped spacetime
复制标题
扭曲时空中的宇宙膜系统
DOI：
10.1103/physrevd.87.046010
复制
发表时间：
2013
影响因子：
5
通讯作者：
鵜沢報仁
中科院分区：
文献类型：
--
作者：
南辻真人;鵜沢報仁
在本文中，我们讨论高维超引力理论中的时间相关膜解。我们特别关注涉及三个膜的相交膜解决方案的动态扩展。我们还表明，在近地平线限制中，时间依赖性可以忽略不计，这些膜描述了扭曲的反德西特时空，如相应的静态解中所示。最后，我们检查了高维解压缩后获得的低维宇宙学动力学，并展示了我们找到的解给出了具有幂律膨胀的四维宇宙。
In this paper, we discuss the time-dependent brane solutions in higher-dimensional supergravity theories. We particularly focus on the dynamical extensions of the intersecting brane solutions involving three branes. We also show that in the near-horizon limits, where the time dependence is negligible, these branes describe warped anti–de Sitter spacetimes as in the corresponding static solutions. We finally examine the lower-dimensional cosmological dynamics obtained after compactifications of the higher-dimensional solutions and show the solutions we have found give the four-dimensional universe with power-law expansion.