Inflation in Models with Large Extra Dimensions Driven by a Bulk Scalar Field

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  • 16 March 2000
Abstract
We discuss inflation in models with large extra dimensions, driven by a bulk scalar field. The zero mode of the bulk field plays the role of the inflaton in the brane. It avoids some of the naturalness problems of the usual brane inflation models. Extending the model to include two bulk scalar fields and a bulk potential similar to the hybrid inflation models helps to produce the right prediction for the density perturbations as observed by COBE without any fine tunning.

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