In the last five years the international macroeconomics literature has become increasingly concerned with global current account imbalances, with particular focus on the size and persistence of the US current account deficit. While much of the recent literature on global imbalances (e.g....

We model an environment in which different vintages of capital with their different productivities coexist. A reduction in the cost of investment induces investment in new capital which raises both measured capital and measured productivity simultaneously. We calibrate this model to...

This paper revisits three features of the data that are widely known: (a) there exists a high correlation between bilateral nominal and real exchange rates; (b) real exchange rate movements are highly persistent; and (c) real exchange rates are highly volatile. The paper attempts a joint, albeit...