Scalar brane backgrounds in higher order curvature gravity
| Autor: | Christos Charmousis, Stephen C. Davis, Jean-François Dufaux |
|---|---|
| Přispěvatelé: | Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2003 |
| Předmět: |
High Energy Physics - Theory
Physics Nuclear and High Energy Physics [PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th] 010308 nuclear & particles physics Scalar (mathematics) Graviton FOS: Physical sciences Naked singularity Curvature 01 natural sciences Moduli Gravitation General Relativity and Quantum Cosmology High Energy Physics - Theory (hep-th) 0103 physical sciences Brane 010306 general physics Scalar field Mathematical physics |
| Zdroj: | Journal of High Energy Physics Journal of High Energy Physics, Springer, 2003, 0312, pp.029 |
| ISSN: | 1029-8479 1126-6708 |
| DOI: | 10.1088/1126-6708/2003/12/029 |
| Popis: | We investigate maximally symmetric brane world solutions with a scalar field. Five-dimensional bulk gravity is described by a general lagrangian which yields field equations containing no higher than second order derivatives. This includes the Gauss-Bonnet combination for the graviton. Stability and gravitational properties of such solutions are considered, and we particularily emphasise the modifications induced by the higher order terms. In particular it is shown that higher curvature corrections to Einstein theory can give rise to instabilities in brane world solutions. A method for analytically obtaining the general solution for such actions is outlined. Genericaly, the requirement of a finite volume element together with the absence of a naked singularity in the bulk imposes fine-tuning of the brane tension. A model with a moduli scalar field is analysed in detail and we address questions of instability and non-singular self-tuning solutions. In particular, we discuss a case with a normalisable zero mode but infinite volume element. published version |
| Databáze: | OpenAIRE |
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