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

Abstract

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.

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

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Cited by in corpus (5)

• Effective gravitational equations for f(R) braneworld models
• Braneworld Remarks in Riemann-Cartan Manifolds
• Positive tension 3-branes in an $Ad{S}_5$ bulk
• Gravitational constraints of dS branes in AdS Einstein-Brans-Dicke bulk
• Global monopole as a generator of a bulk-brane structure in Brans-Dicke bulk gravity