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Title: Nonperturbative instabilities as a solution of the cosmological moduli problem

Abstract

It is widely accepted that moduli in the mass range 10 eV-10{sup 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 nonperturbative 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.

Authors:
;  [1]
  1. Department of Physics, McGill University, Montreal, QC, H3A 2T8 (Canada)
Publication Date:
OSTI Identifier:
20776736
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevD.73.043519; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AMPLITUDES; COSMOLOGY; DECAY; GEV RANGE; INSTABILITY; MATHEMATICAL SOLUTIONS; NEGATIVE MASS; NUCLEOSYNTHESIS; OSCILLATIONS; RESONANCE; UNIVERSE

Citation Formats

Shuhmaher, Natalia, and Brandenberger, Robert. Nonperturbative instabilities as a solution of the cosmological moduli problem. United States: N. p., 2006. Web. doi:10.1103/PhysRevD.73.043519.
Shuhmaher, Natalia, & Brandenberger, Robert. Nonperturbative instabilities as a solution of the cosmological moduli problem. United States. doi:10.1103/PhysRevD.73.043519.
Shuhmaher, Natalia, and Brandenberger, Robert. Wed . "Nonperturbative instabilities as a solution of the cosmological moduli problem". United States. doi:10.1103/PhysRevD.73.043519.
@article{osti_20776736,
title = {Nonperturbative instabilities as a solution of the cosmological moduli problem},
author = {Shuhmaher, Natalia and Brandenberger, Robert},
abstractNote = {It is widely accepted that moduli in the mass range 10 eV-10{sup 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 nonperturbative 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.},
doi = {10.1103/PhysRevD.73.043519},
journal = {Physical Review. D, Particles Fields},
number = 4,
volume = 73,
place = {United States},
year = {Wed Feb 15 00:00:00 EST 2006},
month = {Wed Feb 15 00:00:00 EST 2006}
}