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Convergence Rate for Moderate Interaction particles and Application to Mean Field Games

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arxiv 2402.13167 v2 pith:Y2E3ZSGM submitted 2024-02-20 math.PR

classification math.PR
keywords moderateapproachconvergenceinteractionratestochasticapplicationbesov
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abstract

We study two interacting particle systems, both modeled as a system of $N$ stochastic differential equations driven by Brownian motions with singular kernels and moderate interaction. We show a quantitative result where the convergence rate depends on the moderate scaling parameter, the regularity of the solution of the limit equation and the dimension. Our approach is based on the techniques of stochastic calculus, some properties of Besov and Triebel-Lizorkin space, and the semigroup approach introduced in [9].

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  1. Quantitative particle approximation of nonlinear stochastic Fokker-Planck equations with singular kernel

    math.PR 2024-12 conditional novelty 6.0 of 10

    The paper derives explicit N^{-κ} error bounds for the mollified empirical measure of moderately interacting particles with common noise, and proves local strong well-posedness of the limiting stochastic Fokker-Planck...

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