Location of the essential spectrum in curved quantum layers

Location of the essential spectrum in curved quantum layers
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弯曲量子层中基本光谱的位置

DOI:
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
Zhiqin Lu
Zhiqin Lu
中科院分区:
--
文献类型:
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作者:
D. Krejčiřík;Zhiqin Lu

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本文研究浸入欧氏空间的完备非紧黎曼流形的管状邻域中的Dirichlet Laplacian。我们表明,基本频谱与频谱的平面管提供的第二基本形式消失在无穷远和运输的横截面沿着的流形是渐近平行的。对于低维和余维,结果适用于在物理自然条件下的纳米结构中的传播状态的位置。
We consider the Dirichlet Laplacian in tubular neighbourhoods of complete non-compact Riemannian manifolds immersed in the Euclidean space. We show that the essential spectrum coincides with the spectrum of a planar tube provided that the second fundamental form of the manifold vanishes at infinity and the transport of the cross-section along the manifold is asymptotically parallel. For low dimensions and codimension, the result applies to the location of propagating states in nanostructures under physically natural conditions.
约束量子系统的有效哈密顿量
DOI: 10.1090/memo/1083
发表时间: 2013
期刊:
影响因子: --
作者:
Teufel;Wachsmuth
通讯作者: Wachsmuth