Braneworlds scenarios in a gravity model with higher order spatial three-curvature terms

Braneworlds scenarios in a gravity model with higher order spatial three-curvature terms

Autor Bemfica, F. S. Google Scholar
Dias, M. Autor UNIFESP Google Scholar
Gomes, M. Google Scholar
Hoff da Silva, J. M. Google Scholar
Instituição Univ Fed Rio Grande do Norte
Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
DFQ
Resumo In this work we study a Horava-like 5-dimensional model in the context of braneworld theory. the equations of motion of such model are obtained and, within the realm of warped geometry, we show that the model is consistent if and only if lambda takes its relativistic value 1. Furthermore, we show that the elimination of problematic terms involving the warp factor second order derivatives are eliminated by imposing detailed balance condition in the bulk. Afterwards, Israel's junction conditions are computed, allowing the attainment of an effective Lagrangian in the visible brane. in particular, we show that the resultant effective Lagrangian in the brane corresponds to a (3 + 1)-dimensional Horava-like model with an emergent positive cosmological constant but without detailed balance condition. Now, restoration of detailed balance condition, at this time imposed over the brane, plays an interesting role by fitting accordingly the sign of the arbitrary constant beta, insuring a positive brane tension and a real energy for the graviton within its dispersion relation. Also, the brane consistency equations are obtained and, as a result, the model admits positive brane tensions in the compactification scheme if, and only if, beta is negative and the detailed balance condition is imposed.
Idioma Inglês
Financiador Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Data 2013-04-01
Publicado em European Physical Journal C. New York: Springer, v. 73, n. 4, 11 p., 2013.
ISSN 1434-6044 (Sherpa/Romeo, fator de impacto)
Editor Springer
Extensão 11
Fonte http://dx.doi.org/10.1140/epjc/s10052-013-2376-z
Direito de acesso Acesso aberto Open Access
Tipo Artigo
Web of Science WOS:000318292200013
URI http://repositorio.unifesp.br/handle/11600/36122

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