On the large time behavior of solutions of fourth order parabolic equations and ε-entropy of their attractors

Abstract

We study the large time behavior of solutions of a class of fourth order parabolic equations defined on unbounded domains. Specific examples of the equations we study are the Swift–Hohenberg equation and the Extended Fisher–Kolmogorov equation. We establish the existence of a global attractor in a local topology. Since the dynamics is infinite dimensional, we use the Kolmogorov ε-entropy as a measure, deriving a sharp upper and lower bound. To cite this article: M.A. Efendiev, L.A. Peletier, C. R. Acad. Sci. Paris, Ser. I 344 (2007).