One-sector neoclassical growth models reveal that consumption externalities lead to inefficient allocation in a steady state and indeterminate equilibrium toward the steady state only if there is a labor-leisure tradeoff. This paper shows that in a two-sector neoclassical growth model, even...

This paper envisages whether an external habit effect can produce indeterminate equilibrium paths thereby generating endogenous investment fluctuations. In an otherwise standard optimal growth model with leisure, we find that an external habit effect can cause endogenous investment fluctuations...