Abstract
We consider the Zakharov-Kutznesov (ZK) equation posed in with d = 2 and 3. Both equations are globally well-posed in In this article, we prove local energy decay of global solutions: if u(t) is a solution to ZK with data in then for suitable regions of space around the origin, growing unbounded in time, not containing the soliton region. We also prove local decay for solutions. As a byproduct, our results extend decay properties for KdV and quartic KdV equations proved by Gustavo Ponce and the second author. Sequential rates of decay and other strong decay results are also provided as well.
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