On September 2008 Lehman Brothers filed for bankruptcy and the world became aware that the financial crisis that had been unfolding for months was far more serious than expected. Months later it became clear that the financial crisis of 2008-2009 was the worst economic downturn since the Great Depression ...

We seek to develop a business cycle model with a financial sector which can be used to study the consequences of policies to restrict the leverage of financial institutions (banks). Because we wish the model to be consistent with basic features of business cycle data we introduce our banking system ...