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Contribution Details

Type Conference Presentation
Scope Discipline-based scholarship
Title Applying Negishi's method to stochastic models with overlapping generations
Organization Unit
Authors
  • Felix Kübler
  • Johannes Brumm
Presentation Type paper
Item Subtype Original Work
Refereed No
Status Published in final form
Event Title 9th Annual Cowles Conference on General Equilibrium and its applications
Event Type conference
Event Location New Haven US
Event Start Date April 26 - 2013
Event End Date April 28 - 2013
Abstract Text In this paper we develop a Negishi approach to characterize recursive equilibria in stochastic models with overlapping generations. When competitive equilibria are Pareto-optimal, using Negishi-weights as a co-state variable has three major computational advantages over the standard approach of using the natural state: First, the endogenous state space is a unit simplex and thus easy to handle. Second, the number of unknown functions characterizing equilibrium dynamics is orders of magnitude smaller. Third, approximation errors have a compelling economic interpretation. Our main contribution is to show that the Negishi approach extends naturally to models with borrowing-constraints and incomplete financial markets where the welfare theorems fail. Many of the computational advantages carry over to this setting. We derive sufficient conditions for the existence of Markov equilibria in the complete markets model as well as for models with incomplete markets and borrowing constraints.
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