Monetary Policy, Determinacy, and Learnability in the Open Economy

We study how determinacy and learnability of global rational expectations equilibrium may be affected by monetary policy in a simple, two country New Keynesian framework. We seek to understand how monetary policy choices may interact across borders to help or hinder the creation of a unique REE worldwide which can be learned by market participants. We find that open economy considerations may alter conditions for determinacy and learnability relative to closed economy analyses, and that new concerns can arise in the analysis of classic topics such as the desirability of exchange rate targeting, monetary policy cooperation, and monetary union