Inflation and dark energy from three-forms
Abstract
Three-forms can give rise to viable cosmological scenarios of inflation and dark energy with potentially observable signatures distinct from standard single scalar field models. In this study, the background dynamics and linear perturbations of self-interacting three-form cosmology are investigated. The phase space of cosmological solutions possesses (super)-inflating attractors and saddle points which can describe three-form driven inflation or dark energy. The quantum generation and the classical evolution of perturbations is considered. The scalar and tensor spectra from a three-form inflation and the impact from the presence of a three-form on matter perturbations are computed. Stability properties and equivalence of the model with alternative formulations are discussed.
Cite
@article{arxiv.0908.0920,
title = {Inflation and dark energy from three-forms},
author = {Tomi S. Koivisto and Nelson J. Nunes},
journal= {arXiv preprint arXiv:0908.0920},
year = {2010}
}
Comments
19 pages, 8 figures, 2 tables, uses RevTeX; v2: Typos fixed, refs added, reflects the PRD version but with some extra material in Section V and appendices