Electron. J. Differential Equations, Vol. 2026 (2026), No. 23, pp. 1-23.

Global well-posedness of 3D inhomogeneous incompressible liquid crystal systems with density-dependent viscosity in critical Sobolev spaces

Dongxiang Chen, Peng Wang

Abstract:
This article concerns the well posedness of solutions for model of a three-dimensional non-homogeneous incompressible nematic liquid crystal flows with density-dependent viscosity. We establish the existence of global strong solutions when the initial data satisfies \((\rho_0, u_0, \nabla d_0)\in L^\infty(\mathbb{R}^3) \times \dot{H}^{1/2}(\mathbb{R}^3)\times \dot{H}^{1/2}(\mathbb{R}^3)\), and uniqueness when \((\rho_0, u_0,\nabla d_0)\in \dot{B}_{q,1}^{3/q}(\mathbb{R}^3) \times \dot{B}_{2,1}^{1/2}(\mathbb{R}^3)\times \dot{B}_{2,1}^{1/2}(\mathbb{R}^3)\). These results refines the corresponding results obtained by Ye and Zhang [23]

Submitted November 4, 2025. Published March 25, 2026.
Math Subject Classifications: 35Q35, 76D03.
Key Words: Inhomogeneous incompressible liquid crystal flow; well-posedness; density-dependent viscosity; critical Sobolev space.
DOI: 10.58997/ejde.2026.23

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Dongxiang Chen
School of Mathematics and Statistics
Jiangxi Normal University
Nan Chang 330022, China
email: chendx@163.com
Peng Wang
School of Mathematics and Statistics
Jiangxi Normal University
Nan Chang 330022, China
email: wangpeng1739@163.com

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