离散尖点和漏斗上拉普拉斯算子的谱分析
Spectral analysis of the Laplacian acting on discrete cusps and funnels
摘要:
我们研究了与尖点和漏斗的离散模拟相关的离散拉普拉斯算子的扰动。我们以长程方式扰动度规和势。我们建立了一个传播估计和限制吸收原理远离可能的嵌入本征值。该方法是基于一个积极的换向器技术。
英文摘要:
We study perturbations of the discrete Laplacian associated to discrete analogs of cusps and funnels. We perturb the metric and the potential in a long-range way. We establish a propagation estimate and a Limiting Absorption Principle away from the possible embedded eigenvalues. The approach is based on a positive commutator technique.
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