Folded Inflation, Primordial Tensors, and the Running of the Scalar Spectral Index

Richard Easther

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arXiv · hep-th/0407042

Folded Inflation, Primordial Tensors, and the Running of the Scalar Spectral Index

Richard Easther

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Abstract

I discuss folded inflation, an inflationary model embedded in a multi-dimensional scalar potential, such as the stringy landscape. During folded inflation, the field point evolves along a path that turns several corners in the potential. Folded inflation can lead to a relatively large tensor contribution to the Cosmic Microwave Background, while keeping all fields smaller than the Planck scale. I conjecture that if folded inflation generates a significant primordial tensor amplitude, this will generically be associated with non-trivial scale dependence in the spectrum of primordial scalar perturbations.

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Richard Easther. 2005-01-06. Folded Inflation, Primordial Tensors, and the Running of the Scalar Spectral Index. https://arxiv.org/abs/hep-th/0407042

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