We derive the optimal contributions to global climate policy when countries differ with respect to income level and pollution intensity. Countries' growth rates are determined endogenously, and abatement efficiency is improved by technical progress. We show that country heterogeneity has a...

We analyze the impact of carbon prices on human capital accumulation, sectoral change, and economic growth. In our framework output is produced with dirty and/or clean technologies using skilled and unskilled labor as inputs. Carbon policy affects technology selection which transmits incentives...

We study a parametric politico-economic model of economic growth with productive public goods and public consumption goods. The provision of public goods is funded by a proportional tax on consumers' income. Agents are heterogeneous in their initial capital endowments, discount factors and the...

We investigate the convergence property of the capital stock sequence in Ramsey equilibria with limited borrowing by the households. In our model, at the beginning of each period, households are allowed to borrow against their end of the period wage income. Under this assumption the capital...

An AK-model with borrowing constraints and endogenous time preferences is considered. It is assumed that the discount factor of a household is a continuous function of its relative income. We propose a definition of an equilibrium path and prove its existence.