A Consistency Relation for Power Law Inflation in DBI models

Details A Consistency Relation for Power Law Inflation in DBI models A Consistency Relation for Power Law Inflation in DBI models

2007-03-27

arxiv.org/abs/hep-th/0703248v2

Phys.Lett.B650:313-316,2007

Physics

High Energy Physics

High Energy Physics - Theory

Added references, a couple of comments, fixed 3 typos

Scientific paper

10.1016/j.physletb.2007.05.041

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.

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