On Mean Field Games in Infinite Dimension
Abstract
We study a Mean Field Games (MFG) system in a real, separable infinite dimensional Hilbert space. The system consists of a second order parabolic type equation, called Hamilton-Jacobi-Bellman (HJB) equation in the paper, coupled with a nonlinear Fokker-Planck (FP) equation. Both equations contain a Kolmogorov operator. Solutions to the HJB equation are interpreted in the mild solution sense and solutions to the FP equation are interpreted in an appropriate weak sense. We prove well-posedness of the considered MFG system under certain conditions. The existence of a solution to the MFG system is proved using Tikhonov's fixed point theorem in a proper space. Uniqueness of solutions is obtained under typical separability and Lasry-Lions type monotonicity conditions.
Cite
@article{arxiv.2411.14604,
title = {On Mean Field Games in Infinite Dimension},
author = {Salvatore Federico and Fausto Gozzi and Andrzej Święch},
journal= {arXiv preprint arXiv:2411.14604},
year = {2025}
}