科研之友
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摘要
In supersymmetric theories, the presence of axions usually implies the existence of a noncompact, (pseudo)moduli space. In gauge-mediated models, the axion would seem a particularly promising dark matter candidate. The cosmology of the moduli then constrains the gravitino mass and the axion decay constant; the former cannot be much below 10 MeV; the latter cannot be much larger than 10(13) GeV. Axinos, when identifiable, are typically heavy and do not play an important role in cosmology.
- 出版日期2009-12
