A Multiple Step-like Spectrum of Primordial Perturbation

Details A Multiple Step-like Spectrum of Primordial Perturbation A Multiple Step-like Spectrum of Primordial Perturbation

2011-06-28

arxiv.org/abs/1106.5608v2

Physics

High Energy Physics

High Energy Physics - Theory

minor changes and Refs. added, publish in PLB

Scientific paper

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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