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arXiv math/0603107math.APcs.NAmath.NA
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非线性薛定谔方程爆破时间的单调性:数值测试

Monotonicity properties of blow-up time for nonlinear Schrödinger equation: numerical tests

Christophe Besse, Rémi Carles, Norbert Mauser, Hans-Peter Stimming

AI总结:

通过数值实验研究聚焦非线性薛定谔方程在L^2临界和超临界情形下,爆破时间对耦合常数、初始数据二次振荡强度以及阻尼因子的依赖性,发现大多数情况下单调性不成立,但在临界非线性下初始数据二次振荡情形单调性成立并给出解析证明。

摘要:

我们考虑聚焦非线性薛定谔方程,在$L^2$临界和超临界情形下。我们数值研究了爆破时间对三个情形中一个参数的依赖性:当初始数据固定时,对耦合常数的依赖性;当方程和初始轮廓固定时,对初始数据中二次振荡强度的依赖性;最后,当初始数据固定时,对阻尼因子的依赖性。结果表明,在大多数情况下,爆破时间演化的单调性并不发生。在初始数据具有二次振荡且非线性为临界的情形下,单调性成立;这通过解析方法得到证明。

英文摘要:

We consider the focusing nonlinear Schrödinger equation, in the $L^2$-critical and supercritical cases. We investigate numerically the dependence of the blow-up time on a parameter in three cases: dependence upon the coupling constant, when the initial data are fixed; dependence upon the strength of a quadratic oscillation in the initial data when the equation and the initial profile are fixed; finally, dependence upon a damping factor when the initial data are fixed. It turns out that in most situations monotonicity in the evolution of the blow-up time does not occur. In the case of quadratic oscillations in the initial data, with critical nonlinearity, monotonicity holds; this is proven analytically.

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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