Relaxion and natural inflation with multiple axions

Both natural inflation scenario and the relaxion solution to the weak scale
hierarchy problem involve an axion-like field which is required to have
hierarchical couplings. We discuss a novel scheme to generate the required
hierarchical axion couplings (scales) from multiple axions, without
introducing a fine tuning of parameters or an unreasonably large number of
fields. We present also an explicit UV completed model for relaxion with
high scale SUSY.