We develop a tractable bubbles model with financial friction and downward wage rigidity. Competitive speculation in risky bubbles can result in excessive investment booms that precede inefficient busts, where post- bubble aggregate economic activities collapse below the pre-bubble trend. Risky bubbles can reduce ex ante social welfare, and leaning-against-the-bubble policies that balance the boom-bust trade-off can be warranted. We further show that the collapse of a bubble can push the economy into a "secular stagnation" equilibrium, where the zero lower bound and the nominal wage rigidity constraint bind, leading to a persistent recession, such as the Japanese "lost decades."
Biswas, Siddhartha, Andrew Hanson, and Toan Phan.
American Economic Journal: Macroeconomics,
Investment; Capital; Intangible Capital; Capacity
Employment; Unemployment; Wages; Intergenerational Income Distribution; Aggregate Human Capital; Aggregate Labor Productivity
Business Fluctuations; Cycles
Financial Markets and the Macroeconomy