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.
Leinweber Center for Theoretical Physics,
Feb 2, 2017, 6:00 AM