On mean field limit for Brownian particles with Coulomb interaction in 3D

Lei Li, Jian-Guo Liu, Pu Yu

Published 2018-11-19, updated 2019-10-13Version 2

In this paper, we consider the mean field limit of Brownian particles with Coulomb interaction in 3D space. In particular, using a symmetrization technique, we show that the limit measure almost surely is a weak solution to the limiting nonlinear Fokker-Planck equation. By proving that the energy almost surely is bounded by the initial energy, we improve the regularity of the weak solutions. Moreover, by a natural assumption, we establish the weak strong uniqueness principle, which is closely related to the propagation of chaos.