Economic Growth with Bubbles
Universitat Pompeu Fabra - Centre de Recerca en Economia Internacional (CREI); Centre for Economic Policy Research (CEPR)
Universitat Pompeu Fabra - Centre de Recerca en Economia Internacional (CREI); Centre for Economic Policy Research (CEPR); National Bureau of Economic Research (NBER)
CEPR Discussion Paper No. DP7770
We develop a stylized model of economic growth with bubbles. In this model, financial frictions lead to equilibrium dispersion in the rates of return to investment. During bubbly episodes, relatively inefficient investors demand bubbles while relatively efficient investors supply them. Because of this, bubbly episodes channel resources towards efficient investment raising the growth rates of capital and output. The model also illustrates that the existence of bubbly episodes requires some investment to be dynamically inefficient: otherwise, there would be no demand for bubbles. This dynamic inefficiency, however, might be generated by an expansionary episode itself.
Number of Pages in PDF File: 35
Keywords: asset bubbles, dynamic inefficiency, economic growth, financial frictions, pyramid schemes
JEL Classification: E32, E44, O40working papers series
Date posted: May 19, 2010
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