Cash in advance constraint on RD in a Schimpeterian growth model with an endogenous market structure

In this paper we explore the effects of monetary policy on the number of firms, firm market size, inflation and growth in a Schumpeterian growth model with endogenous market structure and cash-in-advance CIA constraints on two distinct types of RD investment in-house RD and entry investment. This allows us to match the empirical evidence and provides novel implications to the literature. We show that if in-house RD (quality improvement-type R&D) is subject to the CIA constraint, raising the nominal interest rate increases the number of firms and inflation, but decreases the firm size and economic growth. By contrast, if entry investment variety expansion-type RD is subject to the CIA constraint, these variables adversely respond to such a monetary policy. Besides, our model generates rich transitional dynamics in response to a change in monetary policy, when RD entry is restricted by a cash constraint.