| Full text | |
| Author(s): |
Total Authors: 2
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| Affiliation: | [1] UNESP, DFQ, BR-12516410 Guaratingueta, SP - Brazil
[2] Univ Fed ABC, Ctr Matemat Comp & Cognicao, BR-09210170 Santo Andre, SP - Brazil
Total Affiliations: 2
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| Document type: | Journal article |
| Source: | Classical and Quantum Gravity; v. 27, n. 22 NOV 21 2010. |
| Web of Science Citations: | 6 |
| Abstract | |
We derive the full projected Einstein-Brans-Dicke gravitational equations associated with an n-dimensional brane embedded in an (n + 1)-dimensional bulk. Using general conditions, as the positivity of the Brans-Dicke parameter and the effective Newton gravitational constant as well, we can constrain the brane cosmological constant in terms of the brane tension, the Brans-Dicke scalar field and the trace of the stress tensor on the brane, in order to achieve a dS brane. Applying these constraints to a specific five-dimensional model, a lower bound for the scalar field on the brane is elicited without solving the full equations. It is shown under which conditions the effective brane cosmological constant can be ignored in the brane projected gravitational field equations, suggesting a different fine tuning between the brane tension and the bulk cosmological constant. (AU) | |
| FAPESP's process: | 09/01246-8 - Cosmological Aspects of Branes in Brans-Dicke Gravity in Different Dimensions |
| Grantee: | Julio Marny Hoff da Silva |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |