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Higher-derivative gravity in brane world models

M. Parry·S. Pichler·D. Deeg
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Abstract

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 show one can evade both fine-tuning and the need for a bulk cosmological constant. An analysis of tensor and scalar perturbations shows gravity is localized on the brane and we recover the Newtonian limit.

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M. Parry, S. Pichler, D. Deeg. 2005-02-04. Higher-derivative gravity in brane world models. https://doi.org/10.1088/1475-7516%2F2005%2F04%2F014

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