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arXiv math/0611402math.AP
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高维非线性薛定谔方程的(浓度)紧吸引子

A (concentration-)compact attractor for high-dimensional non-linear Schrödinger equations

Terence Tao

摘要:

本文研究了在$\R^d$中的$i u_t + Δu = F(u)$薛定谔方程的大数据解的渐近性态,假设$H^1_x(\R^d)$范数是全局有界的(即能量空间中没有爆破),在高维$d \geq 5$中,非线性项是能量亚临界和质量超临界的.在球对称的情况下,我们表明,作为$t \to +\infty$,这些解决方案分裂成一个辐射项的发展,根据线性薛定谔方程,和一个剩余的收敛在$H^1_x(\R^d)$到一个紧凑的吸引子,其中包括工会的球对称几乎周期轨道的NLS流在$H^1_x(\R^d)$。这是尽管在方程中完全没有任何耗散。这种说法可以看作是“孤子分解猜想”的弱形式。我们还得到了一个更复杂的模拟这个结果的非球对称的情况下。作为推论,我们在高维非临界情形下得到了Soffer的“petite猜想”。

英文摘要:

We study the asymptotic behavior of large data solutions to Schrödinger equations $i u_t + Δu = F(u)$ in $\R^d$, assuming globally bounded $H^1_x(\R^d)$ norm (i.e. no blowup in the energy space), in high dimensions $d \geq 5$ and with nonlinearity which is energy-subcritical and mass-supercritical. In the spherically symmetric case, we show that as $t \to +\infty$, these solutions split into a radiation term that evolves according to the linear Schrödinger equation, and a remainder which converges in $H^1_x(\R^d)$ to a compact attractor, which consists of the union of spherically symmetric almost periodic orbits of the NLS flow in $H^1_x(\R^d)$. This is despite the total lack of any dissipation in the equation. This statement can be viewed as weak form of the "soliton resolution conjecture". We also obtain a more complicated analogue of this result for the non-spherically-symmetric case. As a corollary we obtain the "petite conjecture" of Soffer in the high dimensional non-critical case.

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