Density Perturbations in Chain Inflation
High Energy Physics - Phenomenology
2014-11-18 v2
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.
Keywords
Cite
@article{arxiv.hep-ph/0611286,
title = {Density Perturbations in Chain Inflation},
author = {Brian Feldstein and Brock Tweedie},
journal= {arXiv preprint arXiv:hep-ph/0611286},
year = {2014}
}
Comments
28 pages, 16 figures; v2: corrected typos, increased resolution on D=2+1 data points