[Google Scholar profile] [cepr] [repec] [ideas] [cep] [OrcID]

  • Working papers and work in progress

Heterothetic Cobb Douglas: Theory and applications [April 2023] CEPR DP 18077.
  • With Clement Bohr (Northwestern) and Martí Mestieri (UPF and FRB Chicago).
  • We study non-homothetic preferences with unitary demand price-elasticity. Highly tractable. We generalize results in growth theory, international trade, and economic geography.
Sorting to expensive cities [in progress]
  • With Cécile Gaubert (UC Berkeley). Circulated priviously under the title "Income sorting and non-homothetic preferences in spatial general equilibrium."
  • A spatial general equilibrium model featuring heterogeneous households holding general, non-homothetic preferences, and cities endowed with heterogeneous consumption and production amenities.
Structural Change in France over 250 Years [in progress]
  • With Pierre-Philippe Combes (CNRS & Sciences Po), Gilles Duranton (Wharton @ U Penn), and Laurent Gobillon (PSE)
Firm Hierarchies in Space [in progress]
  • With Diego Puga (CEMFI), Matteo Sartori (CEMFI), and Grigorios Spanos (GSEM)
  • We study the formation of hierarchies in firms that are active in multiple locations.
The Impact of Natural Disasters on the Local Economy [in progress]
  • With Giacomo De Giorgi (GSEM) and Costanza Naguib (Bern)
  • We study the impact of natural disasters on US ZIP-code wages, employment, population, and House Price Index.

Publications

Book

Economic Geography and Public Policy [June 2003]
  • With Richard Baldwin, Rikard Forslid, Philippe Martin and Gianmarco Ottaviano, Princeton University Press, 481 pages. [jstor][PUP page]
  • We show how NEG models can be used to analyze trade policy, tax policy, and regional policy.

Referred journal articles
Highways, market access, and spatial sorting [April 2022] ​Trade and frictional unemployment in the global economy [December 2020] Tech Clusters [August 2020]
  • Journal of Economic Perspectives 34(3), pp. 50-76 [doi]
  • With Bill Kerr (Harvard Business School). 
  • What constitutes a tech cluster? How do they function internally? To what degree  policy makers can purposefully foster them?
Comparative advantage and unemployment [August 2020] [Open Access]
  • European Economic Review​ 126 (Article no. 103496) [doi] [Slides]
  • With Céline Carrère (GSEM), Marco Fugazza (UNCTAD), and Marcelo Olarreaga (GSEM). 
  • Trade may increase unemployment in countries with comparative advantage in sectors with less efficient labour markets.
The optimal distribution of population across cities [March 2019]
  • Journal of Urban Economics 110, pp. 102-113 [doi] [Slides] 
  • With David Albouy (U of Illinois), Kristian Behrens (UQAM), and Nathan Seegert (U of Utah). 
  • Press: [EEA Press Release] [The Atlantic's CityLab]
  • New York City is undersized. For at least two reasons.
Trade and towns: Heterogeneous adjustment to a border shock [May 2018]
  • Journal of Urban Economics 105, pp. 162-75 [doi]
  • With Marius Brülhart (HEC Lausanne) and Céline Carrère (GSEM). 
  • Non-technical summary: [LIEPP Sciences Po Policy Brief no. 30]
  • Improved access to foreign markets boosts both employment and nominal wages in border regions. Large towns have larger wage responses and smaller employment responses than small towns.
  • Non-technical summary: [LIEPP Sciences Po Policy Brief no. 30]
A simple model of the Juggernaut effect of trade liberalisation [October 2015]
  • International Economics 143, pp. 70-9 [doi]
  • With Richard Baldwin (HEID). 
  • A political economy model where the principle of reciprocity in multilateral trade talks results in the gradual elimination of tariffs.
Survival of the fittest in cities: Urbanization and inequality [December 2014]
  • Economic Journal 124(581), pp. 1371-1400. [doi] [Appendices] [Data]
  • With Kristian Behrens (UQAM). 
  • Press: [VoxEU] [RES media briefing]
  • Why are large cities both more productive and more unequal than small towns? An answer with a framework that integrates natural advantage, agglomeration economies, and firm selection.
The emulator effect of the Uruguay Round on US Regionalism [November 2014]
  • Review of International Economics 22(5), pp. 1049-78. [doi]
  • With Marco Fugazza (UNCTAD).
  • We uncover an emulator effect of multilateral trade liberalization on subsequent regional trade agreements involving the USA.
Productive cities: Sorting, selection and agglomeration [June 2014 ]
  • Journal of Political Economy 122(3), pp. 507-53 [jstor] [Slides] [Supplemental material]
  • With Kristian Behrens (UQAM) and Gilles Duranton (Wharton).
  • A model of systems of cities that replicates stylized facts about sorting, agglomeration, and selection in cities. And Zipf's law!
Trade in goods and trade in tasks: An integrating framework [January 2014]
  • Journal of International Economics 92(1), pp. 51–62 [doi]
  • With Richard Baldwin
  • Press: [VoxEU] 
  • The Gains-From-Trade, Heckscher–Ohlin, Factor-Price-Equalisation, Stolper–Samuelson, and Rybczynski Theorems in a framework featuring both trade in goods and trade in tasks.
On the origins of land use regulations: Theory and evidence from US metro areas [May 2013] Tempura mutantur: In search of a new testament for NEG [March 2011]
  • Journal of Economic Geography 11(2), pp. 215-30 [doi]
  • With Kristian Behrens 
  • Further extensions of Krugman's original framework unlikely to produce path-breaking new insights. Analyzing heterogeneity, transportation and other public policies, and calibration exercises are more promising.
Labour market reforms, job insecurity, and the flexibility of the employment relationship [January 2009]
  • European Economic Review 53(1), pp. 19-36 [doi]
  • With Niko Matouschek and Paolo Ramezzana .
  • Wage bargaining takes place under asymmetric information. A reduction in firing taxes leads workers and firms to switch from rigid to flexible employment contracts. Which further amplifies the increase in job instability caused by this policy reform.
Off-shoring of routine tasks and (de)industrialization: Threat or opportunity—and for whom? [March 2008]
  • Journal of Urban Economics 63(2), pp. 517-35 [doi].
  • Offshoring and agglomeration economies lock the comparative advantage of advanced nations in complex or strategic functions. Protectionist industrial policies may backfire.
Trade and growth with heterogeneous firms [January 2008]
  • Journal of International Economics 74(1), pp. 21-34 [doi] [Guide to calculations]
  • With Richard Baldwin.
  • Greater openness produces anti-and pro-growth effects.
Entry and asymmetric lobbying: Why governments pick losers [September 2007]
  • Journal of the European Economic Association 5(5), pp. 1064-93 
  • With Richard Baldwin. 
  • Non-technical version here.
  • Press: [FT Deutschland, February 2nd, 2002] [Tim Harford’s FT blog, February 15th, 2008]. 
  • Governments do not pick losers. Losers pick government policy.
Can South-South trade liberalization stimulate North-South trade? [June 2006]
  • Journal of Economic Integration, 21(2) pp. 234-53 [jstor]
  • With Marco Fugazza.  
  • In the presence of input-output linkages, South-South trade liberalization can boost South-North trade.
Agglomeration and trade with input-output linkages and capital mobility [June 2006]
  • Spatial Economic Analysis 1(1), pp. 101-26 [doi] 
  • A New Economic Geography model featuring the ingredients in the title.
The 'Genome' of NEG Models with Input-Output Linkages: A Positive and Normative Synthesis [April 2006]
  • Journal of Economic Geography 6(2), pp. 113-39 [lead article][doi]
  • With Gianmarco Ottaviano. 
  • Positive and normative properties of New Economic Geography models featuring input-output linkages, with pencil and paper.
Agglomeration and Welfare: The Core-Periphery Model in the Light of Bentham, Kaldor, and Rawls [January 2006]
  • Journal of Public Economics 90(1-2), pp. 325-47 [doi]
  • With Sylvie Charlot, Carl Gaigné and Jacques-François Thisse.
  • Krugman meets Bentham, Hicks, Kaldor, and Rawls.
The Role of Human Capital Investments in the Location Decision of Firms [September 2005]
  • Regional Science and Urban Economics 35(5), pp. 570-83 [doi]
  • With Niko Matouschek. 
  • Do human capital investments act as a force for or against concentration? It depends on whether firms or workers are investing. And on whether investments are industry- or firm-specific.
The Structure of Simple ‘New Economic Geography’ Models (Or, on Identical Twins) [April 2005]
  • Journal of Economic Geography 5(2), pp. 201-34 [doi]
  • Krugman's canonical 1991 JPE model (and many follow ups) solved and characterized with pencil and paper (rather than with numerical simulations).
Home-Market vs. Vote-Market Effect: Equilibrium Location in a Probabilistic Voting Model [February 2004]
  • European Economic Review 48(1), pp. 155-79 [doi]
  • With Federica Sbergami.
  • Likely the first model combining voting and New Economic Geography ingredients. Provides a rationalization of regional policies.
Free Trade Agreements without Delocation [July 2000]
  • Canadian Journal of Economics 33(3), pp. 766-86 [jstor]
  • With Richard Baldwin.
  • Intra-industry trade and concerns for production relocation explain features of modern trade agreements.
Invited articles, comments, and chapters in books

Papers not intended for publication

Note(s)
  • Protection for sale made easy, with Richard Baldwin. June 2007, CEP 800 (older version: CEPR 5452).
  • The impact of trade on intraindustry reallocation and aggregate productivity: A comment, with Richard Baldwin. August 2004, CEPR 4634 and NBER 10718.
Slides Obsolete and dormant papers

Non-technical and newspaper articles

Links to co-authors

(In alphabetic order)