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

On the mean field limit for Brownian particles with Coulomb interaction in 3D
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三维库仑相互作用布朗粒子的平均场极限

DOI:
10.1063/1.5114854
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发表时间:
2018-11
影响因子:
1.3
通讯作者:
Pu Yu
Pu Yu
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Lei Li;Jian-Guo Liu;Pu Yu

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本文研究了三维布朗粒子在库仑相互作用下的平均场极限。特别地,利用对称化技巧,我们证明了极限测度几乎必然是极限非线性Fokker-Planck方程的弱解。通过证明弱解的能量几乎必定有界于初始能量,改进了弱解的正则性。此外,通过一个自然的假设,我们建立了弱强唯一性原理,它与混沌的传播密切相关。
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.
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