Inflation and Braneworlds

Abstract

An introductory review of the Randall-Sundrum type II braneworld scenario is presented, with emphasis on the relationship between the density and gravitational wave perturbations that are generated during inflation. The implications of relaxing the reflection symmetry in the fifth dimension are considered. The effects of including a Gauss-Bonnet combination of higher-order curvature invariants in the bulk action are briefly discussed.