Exploring the dark side of the Universe in a dilatonic brane-world scenario

Details Exploring the dark side of the Universe in a dilatonic brane-world scenario Exploring the dark side of the Universe in a dilatonic brane-world scenario

2008-11-25

arxiv.org/abs/0811.4069v1

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, 3 figures, contribution to the anniversary volume "The Problems of Modern Cosmology", on the occasion of the 50th bi

Scientific paper

We describe the late-time acceleration of the Universe within the paradigm of the brane-world scenario. More precisely, we show how a phantom-like behaviour or a crossing of the cosmological constant line can be achieved safely in a dilatonic brane-world model with an induced gravity term on the brane. The brane tension plays the role of dark energy which is coupled to the dilaton bulk scalar field. The phantom mimicry as well as the crossing of the cosmological constant line are achieved without invoking any phantom matter either on the brane or in the bulk.

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