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arXiv 2103.02897math.AP
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Burgers-Hilbert方程行波解的稳定性

Stability of traveling waves for the Burgers-Hilbert equation

Ángel Castro, Diego Córdoba, Fan Zheng

摘要:

我们考虑Burgers-Hilbert方程的光滑解,它是一个小扰动$δ$,来自一个具有小振幅的全局周期行波$ε$。我们使用一种改进的能量方法证明了在时间尺度上$\frac{1}{εδ}$与$0<δ\llε\ll1$和在时间尺度上$\fracε{δ^2}$与$0<δ\llε^2\ll1$光滑解的存在时间.此外,我们表明,行波存在的幅度$ε$的范围$(0,ε^*)$与$ε^*\sim 0.23$和不存在$ε>\frac{2}{e}$。

英文摘要:

We consider smooth solutions of the Burgers-Hilbert equation that are a small perturbation $δ$ from a global periodic traveling wave with small amplitude $ε$. We use a modified energy method to prove the existence time of smooth solutions on a time scale of $\frac{1}{εδ}$ with $0<δ\llε\ll1$ and on a time scale of $\fracε{δ^2}$ with $0<δ\llε^2\ll1$. Moreover, we show that the traveling wave exists for an amplitude $ε$ in the range $(0,ε^*)$ with $ε^*\sim 0.23$ and fails to exist for $ε>\frac{2}{e}$.

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