Spectral Theory of Pseudo-ergodic Operators

Spectral Theory of Pseudo-ergodic Operators
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伪遍历算子的谱论

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发表时间:
2001
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定义了一类作用在空间L 2(X)上的伪遍历非自伴薛定谔算子,并证明了关于它们的谱性质的一些一般性定理。然后应用这些结果研究了作用在L 2(Z)上的非自伴Anderson模型的谱,得到了0位于算符的谱中的精确条件。我们还引入了这类算子的局域谱的概念。
We define a class of pseudo-ergodic non-self-adjoint Schrödinger operators acting in spaces l 2 (X) and prove some general theorems about their spectral properties. We then apply these to study the spectrum of a non-self-adjoint Anderson model acting on l 2 (Z), and find the precise condition for 0 to lie in the spectrum of the operator. We also introduce the notion of localized spectrum for such operators.