Journal Publications

Multi-Sourcing and Miscoordination in Supply Chain Networks, with D. Fearing and A. Tahbaz-Salehi.
Submitted for publication.
[abstract] [paper]

Inventory Pooling under High Variability, with M. G. Markakis.
Submitted for publication.
[abstract] [paper]

Competing over Networks, with A. Ozdaglar and E. Yildiz.
Submitted for publication.

[abstract] [paper]

Inefficient Diversification, with A. Tahbaz-Salehi.
Submitted for publication.

[abstract] [paper]

Dynamics of Information Exchange in Endogenous Social Networks, with D. Acemoglu and A. Ozdaglar.
To appear in Theoretical Economics.

[abstract] [paper]

Optimal Pricing in Networks with Externalities, with O. Candogan and A. Ozdaglar.
Operations Research, 60(4): 883-905, July-August 2012.
[abstract] [paper]

Experimentation, Patents, and Innovation, with D. Acemoglu and A. Ozdaglar.
American Economic Journal: Microeconomics, 3(1): 37-77, February 2011.
[abstract] [paper]

Price and Capacity Competition, with D. Acemoglu and A. Ozdaglar. Games and Economic Behavior, 66(1): 1-26, May 2009.
[abstract] [paper]

Abstract:

We study the efficiency of oligopoly equilibria in a model where firms compete over capacities and prices. Our model economy corresponds to a two-stage game. First, firms choose their capacity levels. Second, after the capacity levels are observed, they set prices. Given the capacities and prices, consumers allocate their demands across the firms. We establish the existence of pure strategy oligopoly equilibria and characterize the set of equilibria. We then investigate the efficiency properties of these equilibria, where "efficiency" is defined as the ratio of surplus in equilibrium relative to the first best. We show that efficiency in the worst oligopoly equilibria can be arbitrarily low. However, if the best oligopoly equilibrium is selected (among multiple equilibria), the worst-case efficiency loss is 2(√N-1)/(N-1) with N firms, and this bound is tight. We also suggest a simple way of implementing the best oligopoly equilibrium.

Conference papers

Optimal Pricing in the Presence of Local Network Effects, with O. Candogan and A. Ozdaglar, WINE 2010.

Forming Information Networks, with D. Acemoglu and A. Ozdaglar, Allerton, 2010.

Communication and Learning in Social Networks: Partial Results, with D. Acemoglu and A. Ozdaglar, Allerton, 2009.

Competition with Atomic Users, with A. Ozdaglar, Asilomar, 2007.

Partial Results on Capacity Competition, with D. Acemoglu and A. Ozdaglar, Allerton, 2006.