Due to markup distortions, in international trade models with monopolistic competition and heterogeneous firms the market equilibrium is inefficient unless demand exhibits constant elasticity of substitution. When it does not, global welfare maximization generally requires policy intervention...

Due to markup distortions, in international trade models with monopolistic competition and heterogeneous firms the market equilibrium is inefficient unless demand exhibits constant elasticity of substitution. When it does not, global welfare maximization generally requires policy intervention...

This paper studies the effect of regional trade agreements on firms' exports. Using detailed information on the content of trade agreements and firm-level exports for 31 developing countries between 2000 and 2020, the analysis shows that the depth of trade agreements matters for the export...

We address the trade effect of restrictive product standards on the margins of trade, by matching a detailed panel of French firm exports with a new database compiling the list of Sanitary and Phyto-Sanitary regulatory measures that have been raised as a concern in dedicated committees of the...