title: Effects of compactification in D-brane inflation.
abstract: In D3-brane inflation, the inflaton potential receives important contributions from sources in the compact space, such as fluxes, other D-branes, and orientifold planes. Most previous analyses have considered only the effects of sources near to the inflationary D3-brane, but in fact distant sources do not generically decouple and can critically influence the dynamics during inflation. We provide a systematic method for incorporating the effects of arbitrary distant sources as perturbations to the local supergravity background. We use this approach to obtain the structure of the potential for a D3-brane in a warped throat geometry attached to a general compact space. A significant, and well-known, contribution to this potential arises from quantum effects involved in the stabilization of the compactification volume. Our method automatically captures these effects, encoding them in a suitable flux background.
authors.affiliation: School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540, USA.
authors.forename: Daniel
authors.initials: D
authors.lastname: Baumann
authors.forename: Anatoly
authors.initials: A
authors.lastname: Dymarsky
authors.forename: Shamit
authors.initials: S
authors.lastname: Kachru
authors.forename: Igor R
authors.initials: IR
authors.lastname: Klebanov
authors.forename: Liam
authors.initials: L
authors.lastname: McAllister