The literature on optimal monetary policy in New Keynesian models under both commitment and discretion usually solves for the optimal allocations that are consistent with a rational expectations market equilibrium, but it does not study whether the policy can be implemented given the available...

Optimal monetary policy analysis can be viewed as a constrained optimization problem: the policymaker chooses a competitive equilibrium allocation that maximizes social welfare among the set of all feasible competitive equilibrium allocations. Part of the solution to this problem is a monetary...

Currently there is a growing literature exploring the features of optimal monetary policy in New Keynesian models under both commitment and discretion. This literature usually solves for the optimal allocations that are consistent with a rational expectations market equilibrium, but it does not...