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Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

Online ISSN 1552-4485; Print ISSN 0033-569X

   
 
 

 

Hilbert expansion for Coulomb collisional kinetic models


Authors: Zhimeng Ouyang, Lei Wu and Qinghua Xiao
Journal: Quart. Appl. Math.
MSC (2020): Primary 82C40; Secondary 76P05, 35Q20
DOI: https://doi.org/10.1090/qam/1689
Published electronically: March 12, 2024
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Abstract: The relativistic Vlasov-Maxwell-Landau (r-VML) system and the relativistic Landau (r-LAN) equation are fundamental models that describe the dynamics of an electron gas. In this paper, we introduce a novel weighted energy method and establish the validity of the Hilbert expansion for the one-species r-VML system and r-LAN equation. As the Knudsen number shrinks to zero, we rigorously demonstrate the relativistic Euler-Maxwell limit and relativistic Euler limit, respectively. This successfully resolves the long-standing open problem regarding the hydrodynamic limits of Landau-type equations.


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Additional Information

Zhimeng Ouyang
Affiliation: Department of Mathematics, University of Chicago, Chicago, IL 60637
MR Author ID: 1375691
ORCID: 0000-0002-5753-0278
Email: zhimeng_ouyang@alumni.brown.edu

Lei Wu
Affiliation: Department of Mathematics, Lehigh University, Bethlehem, PA 18015
ORCID: 0000-0002-7349-529X
Email: lew218@lehigh.edu

Qinghua Xiao
Affiliation: Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, People’s Republic of China
Email: xiaoqh@apm.ac.cn

Keywords: Hilbert expansion, relativistic Landau equation, relativistic Vlasov-Maxwell-Landau system, local Maxwellian
Received by editor(s): August 31, 2023
Received by editor(s) in revised form: February 11, 2024
Published electronically: March 12, 2024
Additional Notes: The first author was supported by an NSF Grant DMS-2202824. The second author was supported by an NSF Grant DMS-2104775. The third author was supported by NSFC Grants 11871469 and 12271506.
Article copyright: © Copyright 2024 Brown University