Endogenous Entry, Product Variety, and Business Cycles Author(s): Florin O. Bilbiie, Fabio Ghironi, and Marc J. Melitz Reviewed work(s): Source: Journal of Political Economy, Vol. 120, No. 2 (April 2012), pp. 304-345 Published by: The University of Chicago Press Stable URL: http://www.jstor.org/stable/10.1086/665825 . Accessed: 07/06/2012 09:24 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact
[email protected]. The University of Chicago Press is collaborating with JSTOR to digitize, preserve and extend access to Journal of Political Economy. http://www.jstor.org Endogenous Entry, Product Variety, and Business Cycles Florin O. Bilbiie Paris School of Economics, Universite´ Paris 1 Panthe´on-Sorbonne, and Centre for Economic Policy Research Fabio Ghironi Boston College, Federal Reserve Bank of Boston, and National Bureau of Economic Research Marc J. Melitz Harvard University, Centre for Economic Policy Research, and National Bureau of Economic Research This paper builds a framework for the analysis of macroeconomic fluctuations that incorporates the endogenous determination of the number of producers and products over the business cycle. Economic Previously circulated under the title “Business Cycles and Firm Dynamics” and first presented in the summer of 2004.