In one-sector neoclassical growth models, consumption externalities lead to an inefficient allocation in a steady state and indeterminate equilibrium toward a steady state only if there is a labor-leisure tradeoff. This paper shows that in a two-sector neoclassical growth model, even without a...

This paper develops a new mechanism for local indeterminacy in a constant-return, two-sector, human capital enhanced growth model, with productive public spending financed by the income taxation in the goods sector. The use of productive public goods services is subject to an external congestion...

Empirical studies often find significant and positive R&D spillovers across firms. In this note, we incorporate this spillover effect into a scale-invariant quality-ladder model. We find that the modified model features multiple steady states (i) a high-R&D steady state, (ii) a low-R&D steady...