I reconsider the long-standing consensus view that macroeconomic stabilization should rely on monetary policy, not fiscal policy. I use an analytically tractable heterogeneous agent New Keynesian (HANK) model that is parameterized so as to admit a bubble in public debt. In this context, I show...

This paper studies the public debt implications of a class of Aiyagari (1994)-Bewley (1977)-Huggett (1993) (ABH) models of incomplete insurance in which agents face a near-zero probability of a highly adverse outcome. In generic models of this kind, there exists a public debt bubble, so that the...

This paper derives the curvature properties of the short-run Phillips curve in a class of canonical models of price-setting frictions. Contrary to conventional thinking, the Phillips curve is asymptotically horizontal for high levels of economic activity and asymptotically vertical for low...

This paper uses evidence from the Federal Open Market Committee's Summary of Economic Projections to show that US monetary policymakers have objectives over unemployment and inflation outcomes that are not well-approximated through a conventional quadratic loss function. Rather, policymakers...

This paper shows that there is more scope for a borrower to engage in a sustainable infinite debt rollover (a "Ponzi scheme") when interest/growth rates are stochastic. In this context, I prove that the relevant "r vs. g" comparison uses the yield r_{long} to an infinite-maturity zero-coupon...