Supersymmetry, Axions and Cosmology
arXiv:hep-ph/0210256 · doi:10.1103/PhysRevD.68.075011
Abstract
Various authors have noted that in particular models, the upper bound on the axion decay constant may not hold. We point out that within supersymmetry, this is a generic issue. For large decay constants, the cosmological problems associated with the axion's scalar partner are far more severe than those of the axion. We survey a variety of models, both for the axion multiplet and for cosmology, and find that in many cases where the cosmological problems of the saxion are solved, the usual upper bound on the axion is significantly relaxed. We discuss, more generally, the cosmological issues raised by the pseudoscalar members of moduli multiplets, and find that they are potentially quite severe.
27 pages, published version, some discussions clarified
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- Dynamics of the Peccei Quinn Scale
- F-theory, GUTs, and the Weak Scale
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- A Solution to the mu/Bmu Problem in Gauge Mediation with Hidden Gauge Symmetry
- Hidden Sector Monopole Dark Matter with Matter Domination
- Exotic Axions
- Dynamical generation of the Peccei-Quinn scale in gauge mediation
- Common Origin of Warm Dark Matter and Dark Radiation
- Embedding the Pentagon
- Revisiting the cosmological coherent oscillation
- PhD Thesis: String theory in the early universe