We investigate the global dynamics of RBC models with production externalities. We confirm that purely local analysis does not tell the full story. With externalities smaller than required for local indeterminacy, local analysis shows the steady state to be a saddle, implying a unique...

We show that dependence of production on foreign inputs (or non-producible natural resources) can significantly increase the likelihood of indeterminacy. Payment of imported foreign factors of production may act as a semi-fixed cost, amplifying production externalities and returns to scale,...

Are asset prices unduly volatile and often detached from their fundamentals? Does the bursting of financial bubbles depress the real economy? This paper addresses these issues by constructing a DSGE model with speculative bubbles. We characterize conditions under which storable goods, regardless...

We estimate a DSGE model with (S,s) inventory policies. We find that (i) taking inventories into account can significantly improve the empirical fit of DSGE models in matching the standard business-cycle moments (in addition to explaining inventory fluctuations); (ii) (S,s) inventory policies...

Why is there inventory investment when its expected rate of return is strictly dominated by that of fixed-capital investment? Why is inventory investment procyclical at business-cycle frequencies but countercyclical at the very high frequencies (e.g., 2-3 quarters per cycle)? Why does the...

We show that dependence on foreign energy can increase economic instability by raising the likelihood of equilibrium indeterminacy, hence making fluctuations driven by self-fulfilling expectations easier to occur. This is demonstrated in a standard neoclassical growth model. Calibration...

We show that dependence of production on foreign inputs (or non-producible natural resources) can significantly increase the likelihood of indeterminacy. Payment of imported foreign factors of production may act as a semi-fixed cost, amplifying production externalities and returns to scale,...

Post war US data show that consumption growth causes output and investment growth. This is puzzling if technology is the driving force of the business cycle. I ask whether general equilibrium models driven by demand shocks can rationalize the observed causal relations. My conclusion is that...

Necessary conditions for indeterminacy in standard RBC models have been extensively studied, but intuitive understanding of the economic mechanism that generates indeterminacy has yet to be fully explored. Following the permanent income theory, this paper provides an alternative framework for...

When capacity utilization is allowed to vary, standard equilibrium theory predicts that demand shocks can generate not only closed-economy business cycles that are previously thought explainable only by technology shocks, but also international business cycles that are more consistent with the...