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A global attracting set for the Kuramoto-Sivashinsky equation

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Abstract

New bounds are given for the L2-norm of the solution of the Kuramoto-Sivashinsky equation

$$\partial _t U(x,t) = - (\partial _x^2 + \partial _x^4 )U(x,t) - U(x,t)\partial _x U(x,t)$$

, for initial data which are periodic with periodL. There is no requirement on the antisymmetry of the initial data. The result is

$$\mathop {\lim \sup }\limits_{t \to \infty } \left\| {U( \cdot ,t)} \right\|_2 \leqslant const. L^{8/5} $$

.

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Communicated by A. Jaffe

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Collet, P., Eckmann, JP., Epstein, H. et al. A global attracting set for the Kuramoto-Sivashinsky equation. Commun.Math. Phys. 152, 203–214 (1993). https://doi.org/10.1007/BF02097064

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  • DOI: https://doi.org/10.1007/BF02097064

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