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Economic Growth with Bubbles

  • Martin, Alberto
  • Ventura, Jaume

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.

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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 7770.

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Date of creation: Apr 2010
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Handle: RePEc:cpr:ceprdp:7770
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