Axions CDM in non-standard cosmologies

The properties of cold dark matter axions strongly depend on the thermal history of the Universe before BBN. I show that axion cold dark matter may be a good probe of the pre-BBN epoch since observational properties like the axion mass, its velocity dispersion, and the size of axion miniclusters can be used to distinguish among different scenarios.
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Leinweber Center for Theoretical Physics,
Feb 2, 2017, 6:00 AM