Scalar wormholes in a cosmological setting and their instability
文献类型：期刊论文
| 作者 | Sushkov, Sergey V.; Zhang, Yuan-Zhong ; Sushkov, SV , Kazan VI Lenin State Univ, Dept Gen Relativ & Gravitat, Kremlevskaya Str 18, Kazan 420008, Russia
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| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 2008 |
| 卷号 | 77期号:2页码:- |
| 关键词 | Power-law Inflation General-relativity Field Universes Dark Energy Traversable Wormholes Black-holes Gravity Models Throat |
| ISSN号 | 1550-7998 |
| 英文摘要 | We construct exact nonstatic nonhomogeneous spherically symmetric solutions in the theory of gravity with a scalar field possessing the exponential potential. The solution of particular interest corresponds to the scalar field with negative kinetic energy, i.e. a ghost, and represents two asymptotically homogeneous spatially flat universes connected by a throat. We interpret this solution as a wormhole in the cosmological setting. Both the universes and the wormhole throat are simultaneously expanding with acceleration. The character of expansion qualitatively depends on the wormhole's mass m. For m = 0 the expansion goes exponentially, so that the corresponding spacetime configuration represents two de Sitter universes joining by the throat. For m > 0 the expansion has the power character, so that one has the inflating wormhole connecting two homogeneous spatially flat universes expanding according to the power law into the final singularity. The stability analysis of the nonstatic wormholes reveals their instability against linear spherically symmetric perturbations. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000252864000092 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5603]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Sushkov, SV , Kazan VI Lenin State Univ, Dept Gen Relativ & Gravitat, Kremlevskaya Str 18, Kazan 420008, Russia |
| 推荐引用方式 GB/T 7714 | Sushkov, Sergey V.,Zhang, Yuan-Zhong,Sushkov, SV , Kazan VI Lenin State Univ, Dept Gen Relativ & Gravitat, Kremlevskaya Str 18, Kazan 420008, Russia. Scalar wormholes in a cosmological setting and their instability[J]. PHYSICAL REVIEW D,2008,77(2):-. |
| APA | Sushkov, Sergey V.,Zhang, Yuan-Zhong,&Sushkov, SV , Kazan VI Lenin State Univ, Dept Gen Relativ & Gravitat, Kremlevskaya Str 18, Kazan 420008, Russia.(2008).Scalar wormholes in a cosmological setting and their instability.PHYSICAL REVIEW D,77(2),-. |
| MLA | Sushkov, Sergey V.,et al."Scalar wormholes in a cosmological setting and their instability".PHYSICAL REVIEW D 77.2(2008):-. |
入库方式： OAI收割
来源：理论物理研究所
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