Kavli Affiliate: Wayne Hu | Summary:Ultralight axions (ULAs) with masses $10^-33 lesssim m/rm eV lesssim 10^-12$ are well motivated in string-inspired models and can be part or all of the dark energy or the dark matter in this range. Since the ULA field oscillates at a frequency $m$ that can be much larger than the […]
Continue.. Accurate method for ultralight axion CMB and matter power spectra