Phenomenology of Inflaton-Driven Early QCD Confinement and Solution to Axion Isocurvature Problem
This paper proposes a mechanism where an inflaton-gluon coupling dynamically raises the QCD confinement scale during inflation to suppress axion isocurvature perturbations, subsequently allowing the axion to become light and generate the observed dark matter abundance, with viability ensured through specific reheating scenarios and supersymmetry.