Localising gravity in composite monopole brane worlds without bulk cosmological constant

Details Localising gravity in composite monopole brane worlds without bulk cosmological constant Localising gravity in composite monopole brane worlds without bulk cosmological constant

2006-03-09

arxiv.org/abs/hep-th/0603077v1

Phys.Lett.B639:546-552,2006

Physics

High Energy Physics

High Energy Physics - Theory

14 pages including 5 eps figures

Scientific paper

10.1016/j.physletb.2006.06.072

We study a 7-dimensional brane world scenario with a Ricci-flat 3-brane residing in the core of a composite monopole defect, i.e. a defect composed of a 'tHooft-Polyakov and a global monopole. Admitting a direct interaction between the two bosonic sectors of the theory, we analyse the structure of the space-time in the limits of small, respectively large direct interaction coupling constant. For large direct interaction, the global monopole disappears from the system and leaves behind a negative cosmological constant in the bulk such that gravity-localising solutions are possible without the a priori introduction of a bulk cosmological constant.

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