Otro
Towards a hybrid compactification with a scalar-tensor global cosmic string
Registro en:
Journal of Cosmology and Astroparticle Physics. Bristol: Iop Publishing Ltd, n. 9, p. 12, 2008.
1475-7516
10.1088/1475-7516/2008/09/021
WOS:000259700200008
Autor
Abdalla, M. C. B.
Guimaraes, M. E. X.
da Silva, J. M. Hoff
Resumen
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 R((3,1)) x S(1) topology and a power law warp factor, and one non-compact 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 means of the Brans-Dicke parameter. Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)