Towards an hybrid compactification with a scalar-tensor global cosmic string

Details Towards an hybrid compactification with a scalar-tensor global cosmic string Towards an hybrid compactification with a scalar-tensor global cosmic string

2007-07-02

arxiv.org/abs/0707.0233v2

Physics

High Energy Physics

High Energy Physics - Theory

RevTex, 7 pages. New version to be published in the JCAP (2008)

Scientific paper

10.1088/1475-7516/2008/09/021

We derive a solution of the gravitational equations which leads to a braneworld scenario in six dimensions using a global cosmic string solution in a low energy effective string theory framework. The final spacetime is composed by one warped brane with $\mathbb{R}^{(3,1)}\times S^{1}$ topology and a power law warp factor, and one noncompact extra dimension transverse to the brane. By looking at the current experimental bounds, we find a range of parameters in which, if the on-brane dimension has an acceptable size, it does not solve the hierarchy problem. In another example this problem is smoothed by the Brans-Dicke parameter.

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