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Axiverse Cosmology and the Energy Scale of Inflation



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Recording Details

Speaker(s): 
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PIRSA Number: 
13050054

Abstract

Ultra-light axions (m_a
I will also present preliminary results of constraints to this model using up-to-date cosmological observations, which verify the above picture. The parameter space is interesting to explore due to a strongly mass dependent covariance matrix, motivating comparisons between Metropolis-Hastings and nested sampling. Finally I discuss fine-tuning and naturalness in these models.