NBER Working Papers by Satyajit Chatterjee

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Working Papers

June 2007Spin-offs and the Market for Ideas
with Esteban Rossi-Hansberg: w13198
We propose a theory of firm dynamics in which workers have ideas for new projects that can be sold in a market to existing firms or implemented in new firms: spin-offs. Workers have private information about the quality of their ideas. Because of an adverse selection problem, workers can sell their ideas to existing firms only at a price that is not contingent on their information. We show that the option to spin off in the future is valuable so only workers with very good ideas decide to spin off and set up a new firm. Since entrepreneurs of existing firms pay a price for the ideas sold in the market that implies zero expected profits for them, firms' project selection is independent of their size, which, under some assumptions, leads to scale-independent growth. The entry and growth proc...
December 1993Entry and Exit, Product Variety and the Business Cycle
with Russell Cooper: w4562
We study the stochastic behavior of a dynamic general equilibrium model with monopolistic competition. Each seller sells his product in the consumption goods as well as the investment goods market and has market power in both. Consumers derive utility from a CES aggregate of all the consumption goods and augment their capital stock by a CES aggregate of all the investment goods. We analyze the equilibrium of this economy allowing for an endogenous determination of the number of firms and therefore of products. The principal effect we highlight is the endogenous propagation and magnification of technology and preference disturbances through product space variations.
September 1990Participation Dynamics: Sunspots and Cycles
with Russell Cooper, B. Ravikumar: w3438
This paper investigates the possibility of sunspots equilibria and endogenous cycles in an overlapping generations model with strategic interactions. We consider an economy with imperfectly competitive product markets. There is a participation decision on the part of prospective firms and a strategic complementarity emerges from the interaction of firms in their entry decisions both over time and across sectors. When these complementarities are sufficiently strong, multiple steady state equilibria will exist. Sunspot equilibria can then be constructed as randomizations in the neighborhood of these steady states. We relate the properties of our sunspot equilibria to aggregate fluctuations, with particular emphasis on the dynamics of entry and exit. We also show that if intratemporal strateg...

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