Stationary Markovian equilibrium in altruistic stochastic OLG models with limited commitment

We introduce a new class of infinite horizon altruistic stochastic OLG models with capital and labor, but without commitment between the generations. Under mild regularity conditions, for economies with either bounded or unbounded state spaces, continuous monotone Markov perfect Nash equilibrium (he...

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Bibliographic Details
Published in:Journal of mathematical economics 2012-03, Vol.48 (2), p.115-132
Main Authors: Balbus, Łukasz, Reffett, Kevin, Woźny, Łukasz
Format: Article
Language:English
Subjects:
Altruism
Commitment
Commitments
Constructive methods
Equilibrium
Game theory
Macroeconomics
Markov analysis
Markov perfect Nash equilibrium
Markovian processes
Mathematical economics
Nash equilibrium
Overlapping-generations model
Stationarity
Stochastic games
Stochastic models
Stochastic processes
Studies
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Summary:We introduce a new class of infinite horizon altruistic stochastic OLG models with capital and labor, but without commitment between the generations. Under mild regularity conditions, for economies with either bounded or unbounded state spaces, continuous monotone Markov perfect Nash equilibrium (henceforth MPNE) are shown to exist, and form an antichain. Further, for each such MPNE, we can also construct a corresponding stationary Markovian equilibrium invariant distribution. We then show for many versions of our economies found in applied work in macroeconomics, unique MPNE exist relative to the space of bounded measurable functions. We also relate all of our results to those obtained by promised utility/continuation methods based upon the work of Abreu et al. (1990). As our results are constructive, we can provide characterizations of numerical methods for approximating MPNE, and we construct error bounds. Finally, we provide a series of examples to show the potential applications and limitations of our results.
ISSN:0304-4068
1873-1538
DOI:10.1016/j.jmateco.2012.02.002