Abstract
We investigate the embedding of brane inflation into stablecompactifications of string theory. At first sight a warpedcompactification geometry seems to produce a naturally flatinflaton potential, evading one well known difficulty ofbrane–antibrane scenarios. Careful consideration of the closedstring moduli reveals a further obstacle: superpotentialstabilization of the compactification volume typically modifiesthe inflaton potential and renders it too steep for inflation. Wediscuss the non-generic conditions under which this problem doesnot arise. We conclude that brane inflation models can only workif restrictive assumptions about the method of volumestabilization, the warping of the internal space, and the sourceof inflationary energy are satisfied. We argue that this may notbe a real problem, given the large range of availablefluxes and background geometries in string theory.
Submitted Version (
Free)
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call