A Consistency Relation for Power Law Inflation in DBI models
High Energy Physics - Theory
2008-11-26 v2
Abstract
Brane inflation in string theory leads to a new realization of power law inflation which can give rise to significant non-gaussianity. This can happen for any throat geometry if the scalar potential is appropriate. This note presents a consistency relation connecting the running of the nonlinearity parameter characterizing the non-gaussianity and the scalar and tensor indices. The relationship is valid assuming that the throat geometry and scalar potential support power law inflation, regardless of the level of non-gaussianity.
Cite
@article{arxiv.hep-th/0703248,
title = {A Consistency Relation for Power Law Inflation in DBI models},
author = {Michal Spalinski},
journal= {arXiv preprint arXiv:hep-th/0703248},
year = {2008}
}
Comments
Added references, a couple of comments, fixed 3 typos