Massive scalar fields in the early Universe

Details Massive scalar fields in the early Universe Massive scalar fields in the early Universe

2003-11-04

arxiv.org/abs/astro-ph/0311093v1

Int.J.Mod.Phys. D13 (2004) 1167-1176

Astronomy and Astrophysics

Astrophysics

6 pages, Latex2e, talk presented at the 1st International Workshop on Astronomy and Relativistic Astrophysics, 12-16 October,

Scientific paper

10.1142/S0218271804005274

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.

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