Higher-derivative gravity in brane world models

被引：43

作者：

Parry, M ^{[1
]}

Pichler, S ^{[1
]}

Deeg, D ^{[1
]}

机构：

[1] Univ Munich, Dept Phys, Arnold Sommerfeld Ctr, D-80333 Munich, Germany

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2005年 / 04期

关键词：

cosmology with extra dimensions; string theory and cosmology;

D O I：

10.1088/1475-7516/2005/04/014

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate brane world models in higher-derivative gravity theories where the gravitational Lagrangian is an arbitrary function of the Ricci scalar. Making use of the conformal equivalence of such gravity models and Einstein - Hilbert gravity with a scalar field, we deduce the main features of higher-derivative gravity brane worlds. We solve for a gravity model that has corrections quadratic in the Ricci scalar and find it is possible to have a vanishing bulk cosmological constant. An analysis of tensor and scalar perturbations shows that gravity is localized on the brane, the Newtonian limit is recovered and the brane - bulk system appears to be stabilized.

引用

页码：295 / 310

页数：16

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