Sharp spectral transition for eigenvalues embedded into the spectral bands of perturbed periodic operators
Sharp spectral transition for eigenvalues embedded into the spectral bands of perturbed periodic operators
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嵌入扰动周期算子谱带中的特征值的急剧谱转变
DOI:
10.1007/s11854-020-0111-x
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Ong, Darren C.
中科院分区:
文献类型:
--
作者:
Liu, Wencai;Ong, Darren C.
In this paper, we consider the Schrödinger equation,whereV0(x) is 1-periodic andV(x) is a decaying perturbation. By Floquet theory, the spectrum ofH0= − ∇2+V0is purely absolutely continuous and consists of a union of closed intervals (often referred to as spectral bands). Given any finite set of pointsin any spectral band ofH0obeying a mild non-resonance condition, we construct smooth functionssuch thatH = H0+Vhas eigenvalues. Given any countable set of points {Ej} in any spectral band of Ho obeying the same non-resonance condition, and any functionh(x) > 0 going to infinity arbitrarily slowly, we construct smooth functionssuch thatH = H0+Vhas eigenvalues {Ej}. On the other hand, we show that there is no eigenvalue ofH = H0+Vembedded in the spectral bands ifasxgoes to infinity. We prove also an analogous result for Jacobi operators.
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影响因子:
1.7
作者:
Liu, Wencai
通讯作者:
Liu, Wencai
DOI:
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发表时间:
2016
期刊:
影响因子:
--
作者:
S. Simonov
通讯作者:
S. Simonov
DOI:
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发表时间:
1986
期刊:
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作者:
S. Naboko
通讯作者:
S. Naboko
DOI:
--
发表时间:
2001
期刊:
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--
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