An Inflationary Scenario in Intersecting Brane Models

Details An Inflationary Scenario in Intersecting Brane Models An Inflationary Scenario in Intersecting Brane Models

2007-03-29

arxiv.org/abs/hep-th/0703278v2

JHEP0707:045,2007

Physics

High Energy Physics

High Energy Physics - Theory

30 pages, 2 figures; v2 references and comments added

Scientific paper

10.1088/1126-6708/2007/07/045

We propose a new scenario for D-term inflation which appears quite straightforwardly in the open string sector of intersecting brane models. We take the inflaton to be a chiral field in a bifundamental representation of the hidden sector and we argue that a sufficiently flat potential can be brane engineered. This type of model generically predicts a near gaussian red spectrum with negligible tensor modes. We note that this model can very naturally generate a baryon asymmetry at the end of inflation via the recently proposed hidden sector baryogenesis mechanism. We also discuss the possibility that Majorana masses for the neutrinos can be simultaneously generated by the tachyon condensation which ends inflation. Our proposed scenario is viable for both high and low scale supersymmetry breaking.

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