Non-Perturbative Instabilities as a Solution of the Cosmological Moduli Problem

Details Non-Perturbative Instabilities as a Solution of the Cosmological Moduli Problem Non-Perturbative Instabilities as a Solution of the Cosmological Moduli Problem

2005-07-12

arxiv.org/abs/hep-th/0507103v1

Phys.Rev. D73 (2006) 043519

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, no figures

Scientific paper

10.1103/PhysRevD.73.043519

It is widely accepted that moduli in the mass range 10eV - $10^4$GeV which start to oscillate with an amplitude of the order of the Planck scale either jeopardize successful predictions of nucleosynthesis or overclose the Universe. It is shown that the moduli problem can be relaxed by making use of parametric resonance. A new non-perturbative decay channel for moduli oscillations is discussed. This channel becomes effective when the oscillating field results in a net negative mass term for the decay products. This scenario allows for the decay of the moduli much before nucleosynthesis and, therefore, leads to a complete solution of the cosmological moduli problem.

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