In spacetimes of dimension greater than four it is natural to consider higher order (in R) corrections to the Einstein equations. In this letter generalized Israel junction conditions for a membrane… Expand

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… Expand

Corrections to solar system gravity are derived for f(G) gravity theories, in which a function of the Gauss-Bonnet curvature term is added to the gravitational action. Their effects on Newton's law,… Expand

Inflation and moduli stabilization mechanisms work well independently, and many string-motivated supergravity models have been proposed for them. However, a complete theory will contain both, and… Expand

We uncover a rich microphysical structure for SO(10) cosmic strings. For the abelian string the electroweak symmetry is restored around it in a region depending on the electroweak scale. A rich… Expand

It is shown that racetrack inflation can be implemented in a moduli stabilization scenario with a supersymmetric uplifting D-term. The resulting model is completely described by an effective… Expand