We study the relationship between equilibrium existence and uniqueness in LQ-games, and the classical theory of economic policy. By focusing on system controllability, we find necessary conditions for the existence and uniqueness of the Nash equilibrium that generalize results in the existing...

The paper re-examines Rogoff's [Rogoff, K., 1985. The Optimal Degree of Commitment to an Intermediate Monetary Target. Quarterly Journal of Economics 100, 1169-1189.] influential monetary policy result. It shows that responses of a conservative central banker and the resulting macroeconomic...