A Multiple Step-like Spectrum of Primordial Perturbation

preprint2011arXivOpen access

Abstract

We show that if the inflaton effective potential has multiple discontinuous points in its first derivative, the spectrum of primordial perturbation will be multiple step-like. We give a general analysis by applying a simple model. In principle, as long as the height of step is low enough, the result of spectrum will be consistent with observations.

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