Financial Integration and Aggregate Stability

This paper explores a two-country model of capital accumulation with country-specific production externalities. The main concern of our discussion is to investigate equilibrium determinacy (aggregate stability) conditions in a financially integrated world economy. We show that the well-established equilibrium determinacy conditions for the case of small-open economy are still valid if heterogeneity between two countries is small enough. As the technological difference between the countries increases, the equilibrium determinacy conditions may diverge from those for the small country setting.