Non-minimally coupled vector curvaton
High Energy Physics - Theory
2008-11-26 v2
Abstract
It is shown that a massive Abelian vector boson field can generate the curvature perturbation in the Universe, when coupled non-minimally to gravity, through an RA^2 coupling. The vector boson acts as a curvaton field imposing the curvature perturbation after the end of inflation, without generating a large-scale anisotropy. The parameter space of the model is fully explored, obtaining the relevant bounds on the inflation scale and the decay constant of the vector curvaton.
Cite
@article{arxiv.0803.3041,
title = {Non-minimally coupled vector curvaton},
author = {Konstantinos Dimopoulos and Mindaugas Karciauskas},
journal= {arXiv preprint arXiv:0803.3041},
year = {2008}
}
Comments
4 pages, 1 figure, RevTex. Corrected mistakes and typos. Analytic results unmodified