Liquidity Traps and Expectation Dynamics: Fiscal Stimulus or Fiscal Austerity?
We examine global dynamics under infinite-horizon learning in New Keynesian models where the interest-rate rule is subject to the zero lower bound. As in Evans, Guse and Honkapohja (2008), the intended steady state is locally but not globally stable. Unstable deflationary paths emerge after large pessimistic shocks to expectations. For large expectation shocks that push interest rates to the zero bound, a temporary fiscal stimulus or a policy of fiscal austerity, appropriately tailored in magnitude and duration, will insulate the economy from deflation traps. However "fiscal switching rules" that automatically kick in without discretionary fine tuning can be equally effective.
Financial support from National Science Foundation Grant no. SES-1025011 is gratefully acknowledged. Any views expressed are those of the authors and do not necessarily reflect the views of the Bank of Finland or the National Bureau of Economic Research.
“Liquidity Traps and Expectation Dynamics: Fiscal Stimulus or Fiscal Austerity?,” (with George Evans and Seppo Honkapohja), forthcoming, Journal of Economic Dynamics and Control, 2015. citation courtesy of