Criteria for Embedded Eigenvalues for Discrete Schrödinger Operators
Criteria for Embedded Eigenvalues for Discrete Schrödinger Operators
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离散薛定谔算子的嵌入特征值准则
DOI:
10.1093/imrn/rnz262
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发表时间:
2019
影响因子:
1
通讯作者:
Liu, Wencai
中科院分区:
文献类型:
--
作者:
Liu, Wencai
In this paper, we consider discrete Schrödinger operators of the form, $$\begin{equation*} (Hu)(n) = u({n+1})+u({n-1})+V(n)u(n). \end{equation*}$$We viewas a perturbation of the free operator, where. For(no perturbation),anddoes not have eigenvalues embedded into. It is an interesting and important problem to identify the perturbation such that the operatorhas one eigenvalue (finitely many eigenvalues or countable eigenvalues) embedded into. We introduce thealmost sign type potentialsand develop the Prüfer transformation to address this problem, which leads to the following five results.1: We obtain the sharp spectral transition for the existence of irrational type eigenvalues or rational type eigenvalues with even denominators.2: Suppose $\limsup _{n\to \infty } n|V(n)|=a<\infty .$ We obtain a lower/upper bound ofsuch thathas one rational type eigenvalue with odd denominator.3: We obtain the asymptotical behavior of embedded eigenvalues around the boundaries of.4: Given any finite set of pointsinwith, we construct the explicit potentialsuch thathas eigenvalues.5: Given any countable set of pointsinwith, and any functiongoing to infinity arbitrarily slowly, we construct the explicit potentialsuch thathas eigenvalues.
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影响因子:
1.7
作者:
Liu, Wencai
通讯作者:
Liu, Wencai
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
S. Simonov
通讯作者:
S. Simonov
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
A. Kiselev
通讯作者:
A. Kiselev
DOI:
--
发表时间:
2019
期刊:
Pure and applied functional analysis
影响因子:
--
作者:
Liu, Wencai
通讯作者:
Liu, Wencai
影响因子:
1
作者:
B. Simon
通讯作者:
B. Simon