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Article Dans Une Revue Nonlinear Analysis Année : 2021

ERGODIC BEHAVIOR OF CONTROL AND MEAN FIELD GAMES PROBLEMS DEPENDING ON ACCELERATION

Résumé

The goal of this paper is to study the long time behavior of solutions of the first-order mean field game (MFG) systems with a control on the acceleration. The main issue for this is the lack of small time controllability of the problem, which prevents to define the associated ergodic mean field game problem in the standard way. To overcome this issue, we first study the long-time average of optimal control problems with control on the acceleration: we prove that the time average of the value function converges to an ergodic constant and represent this ergodic constant as a minimum of a Lagrangian over a suitable class of closed probability measure. This characterization leads us to define the ergodic MFG problem as a fixed-point problem on the set of closed probability measures. Then we also show that this MFG ergodic problem has at least one solution, that the associated ergodic constant is unique under the standard mono-tonicity assumption and that the time-average of the value function of the time-dependent MFG problem with control of acceleration converges to this ergodic constant.
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Dates et versions

hal-02889875 , version 1 (05-07-2020)

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Pierre Cardaliaguet, Cristian Mendico. ERGODIC BEHAVIOR OF CONTROL AND MEAN FIELD GAMES PROBLEMS DEPENDING ON ACCELERATION. Nonlinear Analysis, 2021, 203, pp.112185. ⟨hal-02889875⟩
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