Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10725062 | Physics Letters B | 2006 | 7 Pages |
Abstract
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 't Hooft-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 a priori introduction of a bulk cosmological constant.
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Authors
Eugênio R. Bezerra de Mello, Betti Hartmann,