Note on the spectrum of discrete Schr\"odinger operators
Note on the spectrum of discrete Schr\"odinger operators
复制标题
关于离散薛定格算子谱的注记
DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
A. Suzuki
中科院分区:
文献类型:
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作者:
F. Hiroshima;Itaru Sasaki;T. Shirai;A. Suzuki
The spectrum of discrete Schr\"odinger operator $L+V$ on the $d$-dimensional lattice is considered, where $L$ denotes the discrete Laplacian and $V$ a delta function with mass at a single point. Eigenvalues of $L+V$ are specified and the absence of singular continuous spectrum is proven. In particular it is shown that an embedded eigenvalue does appear for $d\geq5$ but does not for $1\leq d\leq 4$.