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arXiv 2006.04321math.AP
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能量临界NLS中阈值解的动力学研究:逆平方势场

Dynamics of threshold solutions for energy critical NLS with inverse square potential

SouthEast University(东南大学);Georgia Institute of Technology(佐治亚理工学院);University of Iowa(爱荷华大学)

Kai Yang, Chongchun Zeng, Xiaoyi Zhang

AI总结:

本文研究了能量临界NLS在逆平方势场下的阈值解动力学,证明了动能小于基态的解会散射或收敛到基态,而动能更大的解则在有限时间内发散,仅在五维中存在例外情况。

摘要:

我们考虑在三维、四维和五维空间中,具有逆平方势场的能量临界聚焦NLS方程的解。在三维空间中详细讨论,其他维度则给出结果的评论。在基态能量面上的解被刻画。我们证明,动能小于基态能量的解必须散射到零或属于基态的稳定/不稳定流形。在后一种情况下,它们在能量空间中以指数速度收敛到基态,当t趋向于正无穷或负无穷时。在三维空间中,没有径向假设的情况下,这一结论成立的前提是非散射解在能量面上的紧致性假设。当动能大于基态能量时,我们显示所有径向H¹解在有限时间内发散,唯一两个例外情况出现在五维空间中,属于基态的稳定/不稳定流形。证明依赖于详细的谱分析、局部不变流形理论和全局Virial分析。

英文摘要:

We consider the focusing energy critical NLS with inverse square potential in dimension $d= 3, 4, 5$ with the details given in $d=3$ and remarks on results in other dimensions. Solutions on the energy surface of the ground state are characterized. We prove that solutions with kinetic energy less than that of the ground state must scatter to zero or belong to the stable/unstable manifolds of the ground state. In the latter case they converge to the ground state exponentially in the energy space as $t\to \infty$ or $t\to -\infty$. (In 3-dim without radial assumption, this holds under the compactness assumption of non-scattering solutions on the energy surface.) When the kinetic energy is greater than that of the ground state, we show that all radial $H^1$ solutions blow up in finite time, with the only two exceptions in the case of 5-dim which belong to the stable/unstable manifold of the ground state. The proof relies on the detailed spectral analysis, local invariant manifold theory, and a global Virial analysis.

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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