Evolution of Bulk Scale Factor in Warped Space-time

Details Evolution of Bulk Scale Factor in Warped Space-time Evolution of Bulk Scale Factor in Warped Space-time

2012-02-22

arxiv.org/abs/1202.4973v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

8 pages, submited to MPLA. arXiv admin note: text overlap with arXiv:0710.3790 by other authors

Scientific paper

In this work the role of extra dimensions in the accelerated universe through the scenario of higher-dimensional Friedmann-Robertson-Walker (FRW) cosmology has been studied. For this purpose, we first consider warped space-time in the standard flat brane scenario as the modified form of Robertson-Walker (RW) metric in five-dimension (5D) space-time and then the variation of the bulk scale factor (warp factor), with respect to both space-like and time-like extra dimensions is obtained. Finally, it is shown that both of two types of extra dimensions are important in this scenario and also the bulk scale factor plays two different roles.

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