The ALP miracle revisited
  We revisit the ALP miracle scenario where the inflaton and dark matter are
unified by a single axion-like particle (ALP). We first extend our previous
analysis on the inflaton dynamics to identify the whole viable parameter space
consistent with the CMB observation. Then, we evaluate the relic density of the
ALP dark matter by incorporating uncertainties of the model-dependent couplings
to the weak gauge bosons as well as the dissipation effect. The preferred
ranges of the ALP mass and coupling to photons are found to be $0.01\lesssim
m_\phi \lesssim 1$\,eV and $g_{\phi \gamma \gamma} = {\cal
O}(10^{-11})$\,GeV$^{-1}$, which slightly depend on these uncertainties.
Interestingly, the preferred regions are within reach of future solar axion
helioscope experiments, IAXO and TASTE, and laser-based stim
