… two axions and a hierarchy between two axion decay constants is sufficient for realizing
inflation through nonperturbative effects only and with minimal tuning. The inflationary motion is …

We examine the theoretical possibility for the heavy QCD axion to induce slow-roll inflation
while solving the strong CP problem through the Peccei-Quinn mechanism. If the cancellation …

… of axions where the eternal inflation occurs in the false vacua and the slow-roll inflation …
Contrary to [18], however, we believe that no hierarchy in the potential height is needed to …

… of hierarchical axion … of inflation for trans-Planckian axion field excursions (26–30). On the
other hand, mechanisms have been presented to naturally produce large hierarchies in axion …

… Second one needs a hierarchy between the two axion decay constants, namely f ρ ≪ f θ .
In this regime the dynamics proceeds along a linear combination ϕ = θ + ρf ρ , which is …

… Inflation with tunneling from a false to a true vacuum becomes viable in the presence of a …
Therefore along with inflation we also provide a natural dynamical explanation for why gravity …

… well as possible inflationary dynamics in the axion landscape … by either natural or multi-natural
inflation. In the limit of large … be hierarchically heavier, since the inflaton (the lightest axion…

… For this Letter, we leave aside the technical issue of stabilizing eg the dilaton in such a
way that its mass is hierarchical bigger than the mass of the axion. Thus, we assume that the …

… Because the Λa depend exponentially on fourcycle volumes, there will generally be large
hierarchies among the Λa, and so some terms in the axion potential may provide only small …

… a large number of axions, this inflationary model has not yet … to create a hierarchy of scales
between the axions and the Kähler … associated to the axions which drive inflation, are fixed by …