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Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

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

   
 
 

 

Derivation of the ion equation


Authors: E. Grenier, Y. Guo, B. Pausader and M. Suzuki
Journal: Quart. Appl. Math. 78 (2020), 305-332
MSC (2010): Primary 35Q31; Secondary 35Q32
DOI: https://doi.org/10.1090/qam/1558
Published electronically: September 23, 2019
MathSciNet review: 4077465
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Abstract: We consider the classical Euler-Poisson system for electrons and ions, interacting through an electrostatic field. The mass ratio of an electron and an ion $m_e/M_i\ll 1$ is small and we establish an asymptotic expansion of solutions, where the main term is obtained from a solution to a self-consistent equation involving only the ion variables. Moreover, on $\mathbb {R}^3$, the validity of such an expansion is established even with “ill-prepared” Cauchy data, by including an additional initial layer correction.


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Additional Information

E. Grenier
Affiliation: École Normale Supérieure de Lyon, 46 Allée d’Italie, 69364 Lyon Cedex 07, France
Email: egrenier@umpa.ens-lyon.fr

Y. Guo
Affiliation: Brown University, Division of Applied Mathematics, 182 George Street, Providence, Rhode Island 02912
Email: yan_guo@brown.edu

B. Pausader
Affiliation: Brown University, Department of Mathematics, 151 Thayer Street, Providence Rhode Island, 02912
MR Author ID: 822827
Email: benoit.pausader@math.brown.edu

M. Suzuki
Affiliation: Nagoya Institute of Technology, Department of Computer Science, Gokiso-cho Showa-ku, Nagoya, 466-8555 Japan
MR Author ID: 844148
Email: masahiro@nitech.ac.jp

Received by editor(s): May 17, 2019
Received by editor(s) in revised form: July 23, 2019
Published electronically: September 23, 2019
Additional Notes: The second author’s research was supported in part by NSF grant DMS1810868, BICMR, and a Chinese NSF grant through Beijing Capital Normal University.
The third author was supported by NSF grant DMS-1700282.
The fourth author was supported by JSPS KAKENHI Numbers 26800067 and 18K03364.
Dedicated: Dedicated to Walter Strauss on the occasion of his 80th birthday
Article copyright: © Copyright 2019 Brown University