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arXiv 2005.10575math.APmath.DG
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一维广义双薛定谔流的唯一性

Uniqueness of 1D Generalized Bi-Schrödinger Flow

Eiji Onodera

摘要:

我们建立了从一维平坦环面到紧致局部厄米特对称空间的光滑广义双薛定谔流的唯一性。控制方程是一个四阶非线性色散偏微分方程,它由流诱导的回拉束的截面所满足。为了证明其唯一性,我们采用了一种外在的方法,通过等距嵌入到周围的欧几里得空间来比较两个解决方案。我们引入一个能量修正经典的$H^2$ -能量的两个解决方案的差异,详细的估计,使我们能够消除的困难,损失的衍生物。特别是,我们展示了如何决定的形式的修改,利用局部厄米对称空间的几何结构。

英文摘要:

We establish the uniqueness of a smooth generalized bi-Schrödinger flow from the one-dimensional flat torus into a compact locally Hermitian symmetric space. The governing equation, which is satisfied by sections of the pull-back bundle induced from the flow, is a fourth-order nonlinear dispersive partial differential equation with loss of derivatives. To show the uniqueness, we adopt an extrinsic approach to compare two solutions via an isometric embedding into an ambient Euclidean space. We introduce an energy modifying the classical $H^2$-energy for the difference of two solutions, the detailed estimate of which enables us to eliminate the difficulty of the loss of derivatives. In particular, we demonstrate how to decide the form of the modification by exploiting the geometric structure of the locally Hermitian symmetric space.

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