We develop a tractable rational bubbles model with financial frictions, downward nominal wage rigidity, and the zero lower bound. The interaction of financial frictions and nominal rigidities leads to a "bubbly pecuniary externality," where competitive speculation in risky bubbly assets can...

We embed downward wage rigidity into a rational bubble model. We analytically characterize how the collapse of bubbles can interact with wage rigidity to generate deep and protracted recessions with involuntary unemployment, such as those in Japan or Spain