We modify the vertically differentiated duopoly model by André et al. (2009) replacing Bertrand with Cournot behaviour, and we characterise the region wherein a Porter-type result takes place. We show that the Porter hypothesis applies in an equilibrium taking always the form of a prisoner's...

We investigate the performance of a consumption-based carbon tax – implemented by full border carbon adjustment – as an instrument of unilateral climate damage mitigation in a two-period two-country general equilibrium model with a finite stock of fossil fuel. The implementation of that tax...