Polynomial bound and nonlinear smoothing for the Benjamin-Ono equation on the circle
Polynomial bound and nonlinear smoothing for the Benjamin-Ono equation on the circle
复制标题
圆上 Benjamin-Ono 方程的多项式有界和非线性平滑
DOI:
10.1016/j.jde.2021.06.018
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发表时间:
2021
影响因子:
2.4
通讯作者:
Stefanov, Atanas
中科院分区:
文献类型:
--
作者:
Isom, Bradley;Mantzavinos, Dionyssios;Oh, Seungly;Stefanov, Atanas
For initial data in Sobolev spaces H s (T), 1 2< s⩽ 1, the solution to the Cauchy problem for the Benjamin-Ono equation on the circle is shown to grow at most polynomially in time at a rate (1+ t) 3 (s− 1 2)+ ϵ, 0< ϵ≪ 1. The key to establishing this result is the discovery of a nonlinear smoothing effect for the Benjamin-Ono equation, according to which the solution to the equation satisfied by a certain gauge transform, which is widely used in the well-posedness theory of the Cauchy problem, becomes smoother once its free solution is removed.
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