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arXiv 1105.0937math-phmath.MP
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关于低维Schr dinger算子的负特征值

On negative eigenvalues of low-dimensional Schrödinger operators

S. Molchanov, B. Vainberg

摘要:

本文主要研究一维和二维薛定谔算子以及更一般的具有谱维数$d\leq 2$的算子的负本征值个数的上下估计。经典的Cwikel-Lieb-Rosenblum(Cwikel-Lieb-Rosenblum)上估计要求相应的马尔可夫过程是瞬态的,因此维数大于2。我们得到的估计在低维转换成一个短暂的使用部分湮灭的基本经常性的过程。因此,负特征值个数的估计不是平移不变的,并且包含Bargmann型项。我们证明了一个经典的形式的估计不可能是有效的经常性的基本马尔可夫过程的运营商。我们从下面提供的估计证明所获得的结果是尖锐的。还研究了低维薛定谔算子的Lieb-Thirring估计。

英文摘要:

The paper concerns upper and lower estimates for the number of negative eigenvalues of one- and two-dimensional Schrödinger operators and more general operators with the spectral dimensions $d\leq 2$. The classical Cwikel-Lieb-Rosenblum (CLR) upper estimates require the corresponding Markov process to be transient, and therefore the dimension to be greater than two. We obtain CLR estimates in low dimensions by transforming the underlying recurrent process into a transient one using partial annihilation. As a result, the estimates for the number of negative eigenvalues are not translation invariant and contain Bargmann type terms. We show that a classical form of CLR estimates can not be valid for operators with recurrent underlying Markov processes. We provide estimates from below which prove that the obtained results are sharp. Lieb-Thirring estimates for the low-dimensional Schrödinger operators are also studied.

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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