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Axiverse Cosmology and the Energy Scale of Inflation



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Recording Details

Speaker(s): 
David Marsh
Scientific Areas: 
Cosmology
Collection/Series: 
Cosmology & Gravitation
Subjects: 
Cosmology
Energy
Physics
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.