English

Existence and non-uniqueness of probabilistically strong solutions to 3D stochastic magnetohydrodynamic equations

Analysis of PDEs 2024-08-13 v1 Probability

Abstract

We are concerned with the 3D stochastic magnetohydrodynamic (MHD) equations driven by additive noise on torus. For arbitrarily prescribed divergence-free initial data in Lx2L^{2}_x, we construct infinitely many probabilistically strong and analitically weak solutions in the class LΩrLtγWxs,pL^{r}_{\Omega}L_{t}^{\gamma}W_{x}^{s,p}, where r>1r>1 and (s,γ,p)(s, \gamma, p) lie in a supercritical regime with respect to the the Lady\v{z}henskaya-Prodi-Serrin (LPS) criteria. In particular, we get the non-uniqueness of probabilistically strong solutions, which is sharp at one LPS endpoint space. Our proof utilizes intermittent flows which are different from those of Navier-Stokes equations and derives the non-uniqueness even in the high viscous and resistive regime beyond the Lions exponent 5/4. Furthermore, we prove that as the noise intensity tends to zero, the accumulation points of stochastic MHD solutions contain all deterministic solutions to MHD solutions, which include the recently constructed solutions in [28, 29] to deterministic MHD systems.

Keywords

Cite

@article{arxiv.2408.05450,
  title  = {Existence and non-uniqueness of probabilistically strong solutions to 3D stochastic magnetohydrodynamic equations},
  author = {Wenping Cao and Yachun Li and Deng Zhang},
  journal= {arXiv preprint arXiv:2408.05450},
  year   = {2024}
}