This paper introduces trade costs and endogenous number of varieties in an open economy model with monopolistic competition and short run nominal wage rigidities. We show that these two elements have important implications for the international transmission of monetary and productivity shocks....

This paper studies a policy often used to defend a currency peg: raising short-term interest rates. The rationale for this policy is to stem demand for foreign reserves. Yet, this mechanism is absent from most monetary models. This paper develops a general equilibrium model with asset market...

Three of the most important recent facts in global macroeconomics — the sustained rise in the US current account deficit, the stubborn decline in long run real rates, and the rise in the share of US assets in global portfolio — appear as anomalies from the perspective of...

Studies of disaggregated price data document a robust, positive relationship between nominal exchange rate (NER) volatility and the variability of relative prices for cities separated by national borders. This relationship is interpreted as evidence of sticky prices. This paper shows that a...

Empirical evidence suggests that international goods markets are highly segmented (even for traded goods). Nontraded goods, both in the form of final consumption goods and as an input into the production of final tradable goods, may be an important aspect of market segmentation across countries....

A narrowing of the U.S. current account deficit through exchange rate movements is likely to entail a substantial depreciation of the dollar, as stressed in research by Obstfeld and Rogoff. We assess how the adjustment is affected by the high degree of financial integration in the world economy....

We examine international risk-sharing in economies with non-additive preferences. Examples based on the Epstein-Zin class with Chew-Dekel risk preferences in some cases exhibit quantitatively different behavior from expected utility. We explore the implications for international risk sharing and...