Nominal exchange rate determination and dynamics in an OLG framework

Bambi, Mauro; Eugeni, Sara

Abstract

The empirical evidence on nominal exchange rate dynamics shows a long-run relationship of this variable with the fundamentals of the economy, although such relationship disappears at shorter horizons. This apparently contrasting behaviour of the nominal exchange rate can be explained in an overlapping generations model where the currencies are not perfect substitutes. In this framework, we show that the nominal exchange rate is pinned down by the fundamentals at the monetary steady state. We study the local dynamics and show that when the monetary steady state is locally indeterminate, then fluctuations of the nominal exchange rate around its long-run value can emerge. In particular, we prove the existence of stationary sunspot equilibria, where random fluctuations of the nominal exchange rate arise as a result of self-fulfilling beliefs.

Citation

Bambi, M., & Eugeni, S. (2021). Nominal exchange rate determination and dynamics in an OLG framework. Economic Theory, 72, 93-132. https://doi.org/10.1007/s00199-020-01271-3

• Journal Article Type: Article
• Acceptance Date: Apr 15, 2020
• Online Publication Date: May 8, 2020
• Publication Date: 2021-08
• Deposit Date: Apr 17, 2020
• Publicly Available Date: May 13, 2020
• Journal: Economic Theory
• Print ISSN: 0938-2259
• Electronic ISSN: 1432-0479
• Publisher: Springer
• Peer Reviewed: Peer Reviewed
• Volume: 72
• Pages: 93-132
• DOI: https://doi.org/10.1007/s00199-020-01271-3
• Public URL: https://durham-repository.worktribe.com/output/1273190