Spectrum of a Dilated Honeycomb Network

Spectrum of a Dilated Honeycomb Network
复制标题

扩张蜂窝网络的频谱

DOI:
10.1007/s00020-014-2194-1
复制
发表时间:
2014
影响因子:
0.8
通讯作者:
Ondřej Turek
Ondřej Turek
中科院分区:
数学3区
文献类型:
--
作者:
P. Exner;Ondřej Turek

文献摘要

参考文献

被引文献

相似文献

我们分析了由周期蜂窝晶格支持的拉普拉斯谱,该晶格具有通常不等的边长和顶点中的 δ 型耦合。如果所有边长都相称,这样的量子图具有非空点谱和紧支持的本征函数。我们推导了确定连续光谱分量的条件,并表明间隙的存在可能取决于边长比的数论特性。详细讨论了三个长度中的两个重合的情况。
We analyze spectrum of Laplacian supported by a periodic honeycomb lattice with generally unequal edge lengths and a δ type coupling in the vertices. Such a quantum graph has nonempty point spectrum with compactly supported eigenfunctions provided all the edge lengths are commensurate. We derive conditions determining the continuous spectral component and show that existence of gaps may depend on number-theoretic properties of edge lengths ratios. The case when two of the three lengths coincide is discussed in detail.
DOI: --
发表时间: 2004
期刊: Kyushu Journal of Mathematics 58
影响因子: --
作者:
H.Kazama;K.N.Kim
通讯作者: K.N.Kim