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arXiv 0907.3130math.AP
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能量-超临界非线性薛定谔方程的数值模拟

Numerical simulations of the energy- supercritical Nonlinear Schrödinger equation

J. Colliander, G. Simpson, C. Sulem

摘要:

对具有能量超临界非线性的散焦非线性薛定谔(NLS)方程进行了数值模拟。这些计算的动机来自于Kenig-Merle和Kilip-Visan最近的工作,他们考虑了一些能量超临界波动方程,并证明了如果解在临界索伯列夫空间(即齐次范数在标度下不变的空间)中{先验}有界,那么它对所有时间和散射都存在。本文数值研究了具有五次非线性项的五维NLS方程解的$H^2$ -临界Sobolev范数的有界性。我们发现,对于一类初始条件,这个范数是有界的,解是长时间存在的,并且是分散的。

英文摘要:

We present numerical simulations of the defocusing nonlinear Schrodinger (NLS) equation with an energy supercritical nonlinearity. These computations were motivated by recent works of Kenig-Merle and Kilip-Visan who considered some energy supercritical wave equations and proved that if the solution is {a priori} bounded in the critical Sobolev space (i.e. the space whose homogeneous norm is invariant under the scaling leaving the equation invariant), then it exists for all time and scatters. In this paper, we numerically investigate the boundedness of the $H^2$-critical Sobolev norm for solutions of the NLS equation in dimension five with quintic nonlinearity. We find that for a class of initial conditions, this norm remains bounded, the solution exists for long time, and scatters.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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