We introduce endogenous strategic interactions under competition in quantities and in prices together with endogenous entry in a dynamic stochastic general equilibrium model with flexible prices. The endogenous mark ups depend on the form of competition and on the degree of substitutability...

We consider a standard growth model augmented with a share of rule of thumb con- sumers. A Government ?nances a preset level of public expenditure through ?at tax rates on labor and capital income and also makes lump sum transfers to non ricardian consumers. It has been shown in representative...

I introduce sticky wages in the model with credit constrained or “rule of thumb” consumers advanced by Galì, Valles and Lopez Salido (2005). I show that wage stickiness i) restores, in contrast with the results in Bilbiie (2005), the Taylor Principle as a necessary condition for equilibrium...

We introduce Cournot competition and endogenous entry in an otherwise neoclassical macroeconomic framework. First, we develop a model with exogenous savings à la Solow describing the dynamic path of business creation. Then, we develop a model à la Ramsey describing the dynamic interaction of...

We study the impact of a General Purpose Technology that changes the cost structure turning fixed costs into variable ones in most sectors. A major recent example is cloud computing, whose adoption allows firms to avoid large up-front costs in IT and to rent computing capability online. We study...

We introduce strategic interactions with quantity competition a` la Cournot and endogenous entry in an RBC model with homogenous goods. In the long run, the steady state mark up is decreasing in the capital share, in the discount factor and in the level of technology, while it is increasing in...

We characterise endogenous market structures under Bertrand and Cournot competition in a DSGE model. Short-run mark ups vary countercyclically because of the impact of entry on competition. Long-run mark ups are decreasing in the discount factor and in productivity, and increasing in the exit...

I develop a Schumpeterian model where the engine of growth is in the microeconomic structure of the patent races and derive new results on the determinants of growth. Under decreasing marginal productivity in the R&D sector, the equilibrium is characterized by small firms investing too little...

The EMSs approach to macroeconomics introduces strategic interactions and endogenous entry decisions in the analysis of aggregate phenomena as business cycle, international trade and growth. This survey provides a non-technical discussion of the applications of the EMSs approach to positive and...

The EMSs approach to macroeconomics introduces strategic interactions and en- dogenous entry decisions in the analysis of aggregate phenomena. This approach departs from the perfectly competitive environment, in the sense that rms do not take prices as given, but they do choose their entry and...