arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0911.3697gr-qchep-th
收藏

Anti-de Sitter时空的简单推广

Simple generalizations of Anti-de Sitter space-time

Joao Magueijo, Ali Mozaffari

摘要:

我们考虑新的宇宙学解决方案,推广了宇宙补丁的反德西特(AdS)时空,允许流体的状态方程,使$w\neq -1$。我们用它们来推导相关的全流形。我们发现,这些解决方案都可以嵌入在平坦的五维时空与$--+++$签名,揭示变形双曲面。因此,这些空间的拓扑和拓扑结构是不变的,并且在考虑覆盖空间之前,确定了封闭的类时曲线。然而,基灵向量场的结构是完全不同的,所以我们可以期望在这些解中基灵视界的不同结构。

英文摘要:

We consider new cosmological solutions which generalize the cosmological patch of the Anti-de Sitter (AdS) space-time, allowing for fluids with equations of state such that $w\neq -1$. We use them to derive the associated full manifolds. We find that these solutions can all be embedded in flat five-dimensional space-time with $--+++$ signature, revealing deformed hyperboloids. The topology and causal-structure of these spaces is therefore unchanged, and closed time-like curves are identified, before a covering space is considered. However the structure of Killing vector fields is entirely different and so we may expect a different structure of Killing horizons in these solutions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑