Ramon Trias Fargas, 25-27
Institutional Affiliation: Universitat Pompeu Fabra
Information about this author at RePEc
NBER Working Papers and Publications
|September 2016||Monetary Policy for a Bubbly World|
with Luca Fornaro, Alberto Martin, Jaume Ventura: w22639
We propose a model of money, credit and bubbles, and use it to study the role of monetary policy in managing asset bubbles. In this model, bubbles pop up and burst, generating fluctuations in credit, investment and output. Two key insights emerge from the analysis. First, the growth rate of bubbles, which is driven by agents’ expectations, can be set in real or in nominal terms. This gives rise to a novel channel of monetary policy, as changes in the inflation rate affect the real growth rate of bubbles and their effect on economic activity. Crucially, this channel does not rely on contract incompleteness or price rigidities. Second, there is a natural limit on monetary policy’s ability to control bubbles: the zero-lower bound. When a bubble crashes, the economy may enter into a liquidity ...