Kavli Affiliate: Wayne Hu | First 5 Authors: Keisuke Harigaya, Wayne Hu, Rayne Liu, Huangyu Xiao, | Summary: We show that enhancement of the axion relic abundance compared to the standard misalignment contribution generically leads to the production of nonzero momentum axion modes, resulting in warm dark matter behavior and enhanced isocurvature perturbations. It leads […]
Continue.. Universal lower bound on the axion decay constant from free streaming effects