Massive scalar fields in the early Universe
Astrophysics
2007-05-23 v1 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We discuss the role of gravitational excitons/radions in different cosmological scenarios. Gravitational excitons are massive moduli fields which describe conformal excitations of the internal spaces and which, due to their Planck-scale suppressed coupling to matter fields, are WIMPs. It is demonstrated that, depending on the concrete scenario, observational cosmological data set strong restrictions on the allowed masses and initial oscillation amplitudes of these particles.
Cite
@article{arxiv.astro-ph/0311093,
title = {Massive scalar fields in the early Universe},
author = {Uwe Guenther and Alexander Zhuk},
journal= {arXiv preprint arXiv:astro-ph/0311093},
year = {2007}
}
Comments
6 pages, Latex2e, talk presented at the 1st International Workshop on Astronomy and Relativistic Astrophysics, 12-16 October, 2003, (IWARA2003), Olinda-PE, Brazil