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arXiv · hep-ph/0611286

Density Perturbations in Chain Inflation

Brian Feldstein·Brock Tweedie
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Abstract

We consider the model of ``Chain Inflation,'' in which the period of inflation in our universe took the form of a long sequence of quantum tunneling events. We find that in the simplest such scenario, in which the tunneling processes are uniform, approximately 10^4 vacua per e-folding of inflation are required in order that the density perturbations produced are of an acceptable size. We arrive at this conclusion through a combination of analytic and numerical techniques, which could also serve as starting points for calculations with more general sets of assumptions.

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Brian Feldstein, Brock Tweedie. 2006-12-06. Density Perturbations in Chain Inflation. https://doi.org/10.1088/1475-7516%2F2007%2F04%2F020

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