Initial conditions for hybrid inflation

In hybrid inflation models, typically only a tiny fraction of possible initial conditions give rise to successful inflation, even if one assumes spatial homogeneity. We analyze some possible solutions to this initial conditions problem, namely assisted hybrid inflation and hybrid inflation on the br...

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Bibliographic Details
Published in:arXiv.org 2000-09
Main Authors: Mendes, Luis E, Liddle, Andrew R
Format: Article
Language:English
Subjects:
Cosmology
Initial conditions
Online Access:Get full text
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Summary:In hybrid inflation models, typically only a tiny fraction of possible initial conditions give rise to successful inflation, even if one assumes spatial homogeneity. We analyze some possible solutions to this initial conditions problem, namely assisted hybrid inflation and hybrid inflation on the brane. While the former is successful in achieving the onset of inflation for a wide range of initial conditions, it lacks sound physical motivation at present. On the other hand, in the context of the presently much discussed brane cosmology, extra friction terms appear in the Friedmann equation which solve this initial conditions problem in a natural way.
ISSN:2331-8422
DOI:10.48550/arxiv.0006020