عدم قطعیت، توزیع مجدد بین نسلی، طول عمر درون زا و انباشت سرمایه انسانی

This paper sets up an OLG economy with endogenous life expectancy to study how fiscal policy that redistributes between generations can open the door to sunspot equilibria. Agents invest independently in their own human capital, produce and consume output, and receive a pension upon retirement. The model produces an expectations coordination problem that can explain significant differences in growth paths followed by otherwise identical countries. In particular, we show that our economy may be characterized by local indeterminacy of dynamic equilibria, and hence feature fluctuations which are driven by extrinsic uncertainty.