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arXiv 1111.6671math.APmath-phmath.MP
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三维径向NLS的动力学

The dynamics of the 3D radial NLS with the combined terms

Changxing Miao, Guixiang Xu, Lifeng Zhao

摘要:

在能量空间$H^1(\R^3)$中,给出了具有组合项iu_t + Δu = - |u| ^4 u + |u| ^2 u \tag{CNLS}的非线性薛定谔方程(NLS)在阈值以下能量径向解的散射和爆破结果.阈值由能量临界NLS的基态$W$给出:$iu_t + Δu = -|u|^4u$。这个问题是由Tao,Visan和Zhang在\cite{TaoVZ:NLS:combined}中提出的。主要困难是缺乏标度不变性。在\cite{IbrMN:f:NLKG}的启发下,我们需要给出一种新的带尺度参数的径向剖面分解,并将其应用到散射理论中。我们的结果表明,离焦,$\dot H^1$ -亚临界微扰$|u|^2u$不影响确定的散射解决方案(CNLS)在能量空间的阈值。

英文摘要:

In this paper, we show the scattering and blow-up result of the radial solution with the energy below the threshold for the nonlinear Schrödinger equation (NLS) with the combined terms iu_t + Δu = -|u|^4u + |u|^2u \tag{CNLS} in the energy space $H^1(\R^3)$. The threshold is given by the ground state $W$ for the energy-critical NLS: $iu_t + Δu = -|u|^4u$. This problem was proposed by Tao, Visan and Zhang in \cite{TaoVZ:NLS:combined}. The main difficulty is the lack of the scaling invariance. Illuminated by \cite{IbrMN:f:NLKG}, we need give the new radial profile decomposition with the scaling parameter, then apply it into the scattering theory. Our result shows that the defocusing, $\dot H^1$-subcritical perturbation $|u|^2u$ does not affect the determination of the threshold of the scattering solution of (CNLS) in the energy space.

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