Realization of Power-Law Inflation & Variants via Variation of the   Strong Coupling Constant
  We present a model of power law inflation generated by variation of the strong coupling constant. We then extend the model to two varying coupling constants which leads to a potential consisting of a linear combination of exponential terms. Some variants of the latter may be self-consistent and can accommodate the experimental data of the Planck 2015 and other recent experiments. 
M. AlHallak (Damascus U.) and N. Chamoun (HIAST & Bonn U.)
hep-ph