It is well known that rational bubbles can be sustained in balanced growth path of a deterministic economy when the … return to capital r is equal to the growth rate g. When there is a lack of stores of value, bubbles can implement an … capital. Then, bubbles further efficiency, though they cannot implement first best. While bubbles can only be sustained when r …

Recession. In this paper I demonstrate the role of bubbles in secular stagnation. Bubbles increase the natural rate of interest …, hence they alleviate the cause of secular stagnation. This suggests a positive role for bubbles, however bubbles are …. The secular stagnation hypothesis argues that a negative natural rate of interest is the underlying cause of the Great …

bubbles. For this we posit an overlapping generation model where productivity and credit supply are subject to random shocks …. We find that when real interest rates are lower than the rate of growth, credit financed bubbles may be welfare improving …

We provide a Keynesian growth theory in which pessimistic expectations can lead to very persistent, or even permanent …, slumps characterized by unemployment and weak growth. We refer to these episodes as stagnation traps, because they consist in … the joint occurrence of a liquidity and a growth trap. In a stagnation trap, the central bank is unable to restore full …