In these notes I go over some basic aspects of the analysis of business cycles and aggregate fluctuations from a dynamic stochastic general equilibrium (DSGE) perspective. I build a cannonical DSGE model with a small number of representative agents and a large set of distortionnary wedges...

We show how a Schumpeterian process of creative destruction can induce coordination in the timing of entrepreneurial activities across diverse sectors of the economy.Consequently, a multi-sector economy, in which sector-specific, productivity improvements are made by independent, profit-seeking...

We address an important business cycle fact, i.e., the amplified and hump-shaped responses of output to productivity shocks, in a dynamic general equilibrium model with financial frictions. Models with financial frictions in the current literature have either the amplification mechanism or the...

According to the theory of incomplete contracts, given nonverifiable entrepreneurial project choices together with divergent objectives between an entrepreneur and its outside financier, the entrepreneur can credibly pledge only part of its project outcome for external funding. Meanwhile,...

Why have the Euro area and the US diverged since 2011 while they were highly synchronized during the recession of 2008-2009? To explain this divergence, we provide a structural interpretation of these episodes through the estimation of a business cycle model with financial frictions for both...

I provide empirical evidence that badly governed firms respond more to aggregate shocks than do well governed firms. I build a simple model where managers are prone to over-invest and where shareholders are more willing to tolerate such a behavior in good times. The model successfully explains...

This paper develops a computable dynamic general equilibrium model in which corporate demand for liquidity is endogenously determined. In the model liquidity demand is motivated by moral hazard as in Holmstrom and Tirole (1998). As a result of incorporating agency cost and endogenously...

Credit risk measurement remains a critical field of top priority in banking finance, directly implicated in the recent global financial crisis. This paper examines the dynamic linkages between credit risk migration due to rating shifts and prevailing macroeconomic conditions, reflected in...

We address an important business cycle fact, i.e., the amplified and hump-shaped responses of output to productivity shocks, in a dynamic general equilibrium model with financial frictions. Models with financial frictions in the current literature have either the amplification mechanism or the...

According to the theory of incomplete contracts, given nonverifiable entrepreneurial project choices together with divergent objectives between an entrepreneur and its outside financier, the entrepreneur can credibly pledge only part of its project outcome for external funding. Meanwhile,...