Upper semicontinuity of global attractors for the perturbed viscous Cahn-Hilliard equations
Keywords
Perturbed viscous Cahn-Hilliard equation, global attractor, upper semicontinuityAbstract
It is known that the semigroup generated by the initial-boundary value problem for the perturbed viscous Cahn-Hilliard equation with $\varepsilon> 0$ as a parameter admits a global attractor $\mathcal{A}_{\varepsilon}$ in the phase space $X^{{1}/{2}} =(H^2(\Omega)\cap H^{1}_{0}(\Omega))\times L^2(\Omega)$, $\Omega\subset \mathbb{R}^n$, $n\leq 3$ (see [M. B. Kania, < i> Global attractor for the perturbed viscous Cahn-Hilliard equation< /i> , Colloq. Math. < b> 109< /b> (2007), 217-229]). In this paper we show that the family $\{\mathcal{A}_{\varepsilon}\}_{\varepsilon\in[0,1]}$ is upper semicontinuous at $0$, which means that the Hausdorff semidistance $$ d_{X^{{1}/{2}}}(\mathcal{A}_{\varepsilon},\mathcal{A}_0)\equiv \sup_{\psi\in \mathcal{A}_{\varepsilon}}\inf_{\phi\in\mathcal{A}_{0}}\| \psi-\phi\|_{X^{{1}/{2}}}, $$ tends to 0 as $\varepsilon\to 0^{+}$.Downloads
Published
2008-12-01
How to Cite
1.
KANIA, Maria B. Upper semicontinuity of global attractors for the perturbed viscous Cahn-Hilliard equations. Topological Methods in Nonlinear Analysis. Online. 1 December 2008. Vol. 32, no. 2, pp. 327 - 345. [Accessed 29 March 2024].
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