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Título: Characterization of cocycles attractors for nonautonomous reaction-diffusion equations
Autor: Cardoso, Carlos
Langa, Juan
Obaya, Rafael
Año del Documento: 2016
Editorial: World Scientific
Descripción: Producción Científica
Documento Fuente: International Journal of Bifurcation and Chaos Vol. 26, No. 08, 1650135 (2016)
Resumen: In this paper, we describe in detail the global and cocycle attractors related to nonautonomous scalar differential equations with diffusion. In particular, we investigate reaction–diffusion equations with almost-periodic coefficients. The associated semiflows are strongly monotone which allow us to give a full characterization of the cocycle attractor. We prove that, when the upper Lyapunov exponent associated to the linear part of the equations is positive, the flow is persistent in the positive cone, and we study the stability and the set of continuity points of the section of each minimal set in the global attractor for the skew product semiflow. We illustrate our result with some nontrivial examples showing the richness of the dynamics on this attractor, which in some situations shows internal chaotic dynamics in the Li–Yorke sense. We also include the sublinear and concave cases in order to go further in the characterization of the attractors, including, for instance, a nonautonomous version of the Chafee–Infante equation. In this last case we can show exponentially forward attraction to the cocycle (pullback) attractors in the positive cone of solutio
ISSN: 1793-6551
Revisión por Pares: SI
DOI: 10.1142/S0218127416501352
Patrocinador: info:eu-repo/grantAgreement/EC/H2020/643073
Patrocinador: MINECO/FEDER MTM2015-66330
Version del Editor: http://www.worldscientific.com/doi/abs/10.1142/S0218127416501352
Idioma: eng
URI: http://uvadoc.uva.es/handle/10324/25801
Derechos: info:eu-repo/semantics/openAccess
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