Articles with "essential spectrum" as a keyword



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On the Essential Spectrum of Quantum Graphs

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Published in 2017 at "Integral Equations and Operator Theory"

DOI: 10.1007/s00020-017-2386-6

Abstract: Let $$\Gamma \subset \mathbb {R}^{n}$$Γ⊂Rn be a graph periodic with respect to the action of a group $$\mathbb {G}$$G isomorphic to $$\mathbb {Z}^{m},1\le m\le n. $$Zm,1≤m≤n. We consider a one-dimensional Schrödinger operator $$\begin{aligned} S_{q}u(x)=\left( -\frac{d^{2}}{dx^{2}}+q(x)\right)… read more here.

Keywords: quantum graphs; spectrum; essential spectrum; spectrum quantum ... See more keywords