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arXiv 1005.3091gr-qc
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五维扭曲乘积时空中的引力模型

Models of Gravity in Five-dimensional Warped Product Spactimes

Sarbari Guha, Pinaki Bhattacharya

摘要:

本文研究了具有含时翘曲因子、含时额外维和体宇宙学常数的5维翘曲乘积时空中的引力。膜世界由空间平坦的FRW型度规描述。五维场方程已被构造和解决的翘曲因子和额外的维标度因子的各种情况下,从非常一般的类型的度量,然后减少到具体的情况。在低能区,考虑了具有常曲率的稳定体,由此解释了相应观测宇宙的宇宙学行为。在高能区,假定体是由一个普通的无质量的标量场,此后的标量场源的类型和不同的标度因子进行了研究。

英文摘要:

In this paper, we have considered gravity in a 5-dimensional warped product space-time with a time-dependent warp factor, time-dependent extra dimension and a bulk cosmological constant. The braneworld is described by a spatially flat FRW-type metric. The five-dimensional field equations have been constructed and solved for various cases of the warp factor and the extra-dimensional scale factor, starting from very general type of the metric and then reducing down to specific cases. In the low energy regime, a stabilized bulk with constant curvature has been considered, from which the cosmological behavior of the corresponding observed universe has been interpreted. In the high energy regime, the bulk is assumed to be sourced by an ordinary massless scalar field and thereafter the type of the scalar field source and the different scale factors have been investigated.

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。

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