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arXiv 1502.00968math.APmath-phmath.MP
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非零能量NV方程有理符号的色散估计和局部适定性

Dispersive estimates for rational symbols and local well-posedness of the nonzero energy NV equation

Anna Kazeykina, Claudio Muñoz

摘要:

我们考虑二维Novikov-Veselov方程的Cauchy问题可通过具有固定负能量的薛定谔算子的逆散射问题积分。相关的线性方程的特征在于一个有理符号,它不是一个多项式,除了当能量参数为零。借助复分析的观点,我们建立了增益几乎为一阶导数的线性解的一致衰减估计,并利用这个结果,结合Fourier分解方法和$X^{s,b}$空间,证明了$H^s$,$s>\frac12$的局部适定性.

英文摘要:

We consider the Cauchy problem for the two-dimensional Novikov-Veselov equation integrable via the inverse scattering problem for the Schrödinger operator with fixed negative energy. The associated linear equation is characterized by a rational symbol which is not a polynomial, except when the energy parameter is zero. With the help of a complex analysis point of view of the problem, we establish uniform decay estimates for the linear solution with gain of almost one derivative, and we use this result together with Fourier decomposition methods and $X^{s,b}$ spaces to prove local well-posedness in $H^s$, $s>\frac12$.

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