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arXiv 1607.02534math.AP
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1-d中立方NLS的守恒能量

Conserved energies for the cubic NLS in 1-d

Herbert Koch, Daniel Tataru

摘要:

我们考虑了一维空间中的三次非线性薛定谔方程(NLS)和修正的Korteweg-de Vries(mKdV)方程。我们证明了对于每个$s>-\frac12$都存在一个守恒能量,它等价于解的$H^s$范数。对于Korteweg-de Vries(KdV)方程,每个$s\ge -1$都有相似的守恒能量.

英文摘要:

We consider the cubic Nonlinear Schrödinger Equation (NLS) as well as the modified Korteweg-de Vries (mKdV) equation in one space dimension. We prove that for each $s>-\frac12$ there exists a conserved energy which is equivalent to the $H^s$ norm of the solution. For the Korteweg-de Vries (KdV) equation there is a similar conserved energy for every $s\ge -1$.

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