The primordial density perturbation in the curvaton scenario
Astrophysics
2009-07-09 v3 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We analyse the primordial density perturbation when it is generated by a `curvaton' field different from the inflaton. In some cases this perturbation may have large isocurvature components, fully correlated or anti-correlated with the adiabatic component. It may also have a significant non-Gaussian component. All of these effects are calculated in a form which will enable direct comparison with current and forthcoming observational data.
Cite
@article{arxiv.astro-ph/0208055,
title = {The primordial density perturbation in the curvaton scenario},
author = {David H. Lyth and Carlo Ungarelli and David Wands},
journal= {arXiv preprint arXiv:astro-ph/0208055},
year = {2009}
}
Comments
13 pages, latex with revtex, no figures; v2 caveat added to calculation of isocurvature perturbations in section IV; v3 minor corrections, references added, to appear in Phys Rev D