TY  - JOUR
A1  - Zhuk, Alexandre
A1  - Gunther, U.
T1  - Massive scalar fields in the early universe
N2  - 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
Y1  - 2004
SN  - 0218-2718
ER  -