Another theme of Galí's research is how central banks should set interest rates. In some of the simplest New Keynesian macroeconomic models, stabilizing the inflation rate stabilizes the output gap too.[4] If this property were roughly true in reality, it would permit central bankers to pursue a simplified Taylor rule focused only on inflation stabilization, with no need to consider output growth.[5] Jordi Galí and Olivier Blanchard have called this property the 'divine coincidence', and have argued that in more realistic models which include additional frictions, it no longer holds. Instead, models with additional frictions (such as frictional unemployment) imply a tradeoff between stabilizing inflation and stabilizing the output gap.[6]
In 2008, Princeton University Press published Galí's monograph Monetary Policy, Inflation, and the Business Cycle. The book provides an introduction to New Keynesian DSGE models, and analyzes the implications of those models for monetary policy. It is written at a level intended for introductory graduate courses in macroeconomics. A second edition was published in 2015.
^ abGalí, Jordi (1994), 'Keeping up with the Joneses: consumption externalities, portfolio choice, and asset prices'. Journal of Money, Credit, and Banking 26 (1), pp. 1–8.
^Clarida, Richard; Mark Gertler; and Jordi Galí (2000), 'Monetary policy rules and macroeconomic stability: theory and some evidence.' Quarterly Journal of Economics 115. pp. 147–180.
^Clarida, Richard; Mark Gertler; and Jordi Galí (1998), 'Monetary policy rules in practice: some international evidence.' European Economic Review 42 (6), pp. 1033–67.
^Goodfriend, Marvin, and Robert G. King (1997), 'The New Neoclassical Synthesis and the role of monetary policy'. NBER Macroeconomics Annual 12 (1).
^Blanchard, Olivier, and Jordi Galí (2007), 'Real wage rigidities and the New Keynesian model'. Journal of Money, Credit, and Banking 39 (supplement 1), pp. 35–65.
^Galí, Jordi (1999), 'Technology, employment, and the business cycle: Do technology shocks explain aggregate fluctuations?' American Economic Review 89 (1), pp. 249–71.
^Thomas F. Cooley and Mark Dwyer (1998), 'Business Cycle Analysis Without Much Theory: A Look at Structural VARs'. Journal of Econometrics 83, pp. 57–88.
^Jon Faust and Eric M. Leeper (1997), 'When Do Long-Run Identifying Restrictions Give Reliable Results?' Journal of Business and Economic Statistics 15 (3), pp. 345–53.
^Lawrence, Christiano, Martin Eichenbaum and Robert Vigfusson, `Assessing Structural VARs’, NBER Macroeconomics Annual 2006, Volume 21. Daron Acemoglu, Kenneth Rogoff and Michael Woodford, Editors