arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1207.6350gr-qcastro-ph.COhep-th
收藏

具有负宇宙学常数的McVittie解

The McVittie solution with a negative cosmological constant

Philippe Landry, Majd Abdelqader, Kayll Lake

摘要:

当前的宇宙学观测表明,宇宙是由一个正的宇宙学常数($Λ> 0$)支配的,而AdS/CFT对应关系告诉我们,$Λ<0$的情况仍然值得考虑。本文用$Λ<0$研究McVittie解.在相关的研究之后,这里通过基于零测地线方程的详细数值积分的保角图的系统构造来理解该解决方案。在纯粹的Robertson - Walker情形中,我们发现$Λ<0$确保了坍缩到大挤压,这是一个完全支配全局结构的特征。

英文摘要:

Whereas current cosmological observations suggest that the universe is dominated by a positive cosmological constant ($Λ> 0$), the AdS/CFT correspondence tells us that the case $Λ<0$ is still worthy of consideration. In this paper we study the McVittie solution with $Λ<0$. Following a related study, the solution is understood here by way of a systematic construction of conformal diagrams based on detailed numerical integrations of the null geodesic equations. As in the pure Robertson - Walker case, we find that $Λ<0$ ensures collapse to a Big Crunch, a feature which completely dominates the global structure.

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。

↑