Kinetic Theory with Fluctuations: Well-Posedness of The Vlasov--Fokker--Planck--Dean--Kawasaki Equations

Zimo Hao; Zhengyan Wu; Johannes Zimmer

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arXiv · 2511.10194

Kinetic Theory with Fluctuations: Well-Posedness of The Vlasov--Fokker--Planck--Dean--Kawasaki Equations

Zimo Hao·Zhengyan Wu·Johannes Zimmer

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Abstract

We study Vlasov--Fokker--Planck--Dean--Kawasaki equations driven by correlated conservative noise. For regular noise coefficients and bounded nonlocal interactions, we establish probabilistically strong existence and uniqueness in a renormalized kinetic framework. For the square-root coefficient, we treat the non-interacting case and construct a probabilistically weak solution. Key challenges stem from the complexity of the kinetic operator and the irregularity introduced by the conservative noise with square-root-type coefficients. The proof relies on a novel combination of kinetic semigroup estimates and the framework of renormalized kinetic solutions.

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Zimo Hao, Zhengyan Wu, Johannes Zimmer. 2025-11-13. Kinetic Theory with Fluctuations: Well-Posedness of The Vlasov--Fokker--Planck--Dean--Kawasaki Equations. https://arxiv.org/abs/2511.10194

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