English

Three-dimensional magnetohydrodynamics system forced by space-time white noise

Analysis of PDEs 2023-03-13 v3

Abstract

We consider the three-dimensional magnetohydrodynamics system forced by noise that is white in both time and space. Its complexity due to four non-linear terms makes its analysis very intricate. Nevertheless, taking advantage of its structure and adapting the theory of paracontrolled distributions from \cite{GIP15}, we prove its local well-posedness. A first challenge is to find an appropriate paracontrolled ansatz which must consist of both the velocity and the magnetic fields. Second challenge is that for some non-linear terms, renormalizations cannot be achieved individually; we overcome this obstacle by strategically coupling certain terms together rather than separately. Our proof is also inspired by the work of \cite{ZZ15}.

Keywords

Cite

@article{arxiv.1910.04820,
  title  = {Three-dimensional magnetohydrodynamics system forced by space-time white noise},
  author = {Kazuo Yamazaki},
  journal= {arXiv preprint arXiv:1910.04820},
  year   = {2023}
}

Comments

This is the accepted version by the Electronic Journal of Probability. Its link is here: https://projecteuclid.org/journals/electronic-journal-of-probability/volume-28/issue-none/Three-dimensional-magnetohydrodynamics-system-forced-by-space-time-white-noise/10.1214/23-EJP929.full

R2 v1 2026-06-23T11:40:16.074Z