Cosmological problems of the string axion alleviated by high scale SUSY of m3/2≃10–100 TeV
The string axion may provide the most attractive solution to the strong CP problem in QCD. However, the axion energy density easily exceeds the dark matter density in the present universe due to a large decay constant around 1016 GeV, unless the initial value of the axion field is finely tuned. We s...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2016-02-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269315009910 |