The rise of market power and Ramsey‐optimal policy implications
School of Economics, Henan University
New Keynesian model with Rotemberg sticky prices, transaction cost money demand, distortionary labor taxes, and government debt; examines Ramsey-optimal fiscal and monetary policy under varying markup calibrations reflecting documented rise in 
monopolistic competition with Rotemberg quadratic price adjustment costs
Table 1 p.4
Baseline SGU calibration with markup 1.2