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Localising gravity in composite monopole brane worlds without bulk cosmological constant

Eugenio R. Bezerra de Mello·Betti Hartmann
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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 '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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Eugenio R. Bezerra de Mello, Betti Hartmann. 2006-03-09. Localising gravity in composite monopole brane worlds without bulk cosmological constant. https://doi.org/10.1016/j.physletb.2006.06.072

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