We show that under indeterminacy aggregate demand shocks are able to explain not only aspects of actual °uctuations that standard RBC models predict fairly well, but also aspects of actual °uctuations that standard RBC models cannot explain, such as the hump-shaped, trend reverting impulse...

We study general equilibrium with nonconvexities. In these economies there exist sunspot equilibria without the usual assumptions needed in convex economies, and they have good welfare properties. Moreover, in these equilibria, agents act as if they have quasi-linear utility. Hence wealth...