In this Paper we show that a currency area can be a self-validating optimal policy regime, even when monetary unification does not foster real economic integration and intra-industry trade. This is because profit-maximizing producers in a currency area adopt endogenous pricing strategies that...

This Paper provides a baseline general-equilibrium model of optimal monetary policy among interdependent economies with monopolistic firms and nominal rigidities. An inward-looking policy of complete domestic output stabilization is not optimal when firms' markups are exposed to currency...

Most interpretations of the Exchange Rate Mechanism crisis of 1992/3 ignore the key role played by structural policy spillovers among European countries, and overlook the effects of coordination (or lack thereof) of monetary and exchange rate policies among the countries making up the periphery...

This paper analyses the welfare implications of international spillovers related to productivity gains, changes in market size, or government spending. We introduce trade costs and endogenous varieties in a two-country general-equilibrium model with monopolistic competition, drawing a...

Most analyses of the macroeconomic adjustment required to correct global imbalances ignore net exports of new varieties of goods and services and do not account for firms' net entry in the product market. In this paper we revisit the macroeconomics of trade adjustment in the context of the...

The paper analyses the modalities and consequences of a breakdown of cooperation between the monetary authorities of inflation-prone periphery countries that use an exchange rate peg as an anti-inflationary device, when the centre is hit by an aggregate demand shock. Cooperation in the periphery...

We revisit the classic transfer problem, accounting for two channels of adjustment: increased trade in existing goods and services (the intensive margin) and net creation and destruction of product varieties (the extensive margin). Over the medium term, the latter reduces the scope for real...