  These are proceedings for the Les Houches Summer School ``Particle Physics
and Cosmology: the Fabric of Spacetime,'' held in Les Houches, France, July
31--August 25, 2006. We summarise the discussions of our working group and
outline a procedure for calculating gravity corrections to scalar field
potentials, as they might be relevant for inflationary physics. We focus on a
specific Randall--Sundrum type braneworld scenario and discuss the relevance of
Kaluza--Klein gravitons due to the extra warped dimension.
