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arXiv math/0309428math.AP
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聚焦非线性薛定谔方程的大径向数据的渐近性

On the asymptotic behavior of large radial data for a focusing non-linear Schrödinger equation

Terence Tao

摘要:

在全局有界$H^1(\R^3)$范数(即能量空间无爆破)的条件下,研究了聚焦薛定谔方程$i u_t + Δu = -|u|^2 u$在$\R^3$中的大数据径向解的渐近行为.我们发现,作为$t \to \pm \infty$,这些解决方案分裂成三个方面的总和:一个辐射项,根据线性薛定谔方程,一个光滑函数,本地化的原点附近,并在$\dot H^1(\R^3)$规范的误差为零。此外,在原点附近的光滑函数要么是零(在这种情况下,一个散射到一个自由的解决方案),或有质量和能量严格限制远离零,并服从渐近Pohozaev恒等式。这些结果与孤子分辨的猜想是一致的。

英文摘要:

We study the asymptotic behavior of large data radial solutions to the focusing Schrödinger equation $i u_t + Δu = -|u|^2 u$ in $\R^3$, assuming globally bounded $H^1(\R^3)$ norm (i.e. no blowup in the energy space). We show that as $t \to \pm \infty$, these solutions split into the sum of three terms: a radiation term that evolves according to the linear Schrödinger equation, a smooth function localized near the origin, and an error that goes to zero in the $\dot H^1(\R^3)$ norm. Furthermore, the smooth function near the origin is either zero (in which case one has scattering to a free solution), or has mass and energy bounded strictly away from zero, and obeys an asymptotic Pohozaev identity. These results are consistent with the conjecture of soliton resolution.

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