Peyerimhoff, Norbert and Taeufer, Matthias (2021) 'Eigenfunctions and the integrated density of states on Archimedean tilings.', Journal of spectral theory., 11 (2). pp. 461-488.
We study existence and absence of ` 2 -eigenfunctions of the combinatorial Laplacian on the 11 Archimedean tilings of the Euclidean plane by regular convex polygons. We show that exactly two of these tilings (namely the .3:6/2 “kagome” tiling and the .3:122 / tiling) have ` 2 -eigenfunctions. These eigenfunctions are infinitely degenerate and are constituted of explicitly described eigenfunctions which are supported on a finite number of vertices of the underlying graph (namely the hexagons and 12-gons in the tilings, respectively). Furthermore, we provide an explicit expression for the Integrated Density of States (IDS) of the Laplacian on Archimedean tilings in terms of eigenvalues of Floquet matrices and deduce integral formulas for the IDS of the Laplacian on the .44 /, .36 /, .63 /, .3:6/2 , and .3:122 / tilings. Our method of proof can be applied to other Z d -periodic graphs as well.
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|Publisher Web site:||https://doi.org/10.4171/JST/347|
|Publisher statement:||© 2021 European Mathematical Society Published by EMS Press This work is licensed under a CC BY 4.0 license|
|Date accepted:||No date available|
|Date deposited:||26 April 2020|
|Date of first online publication:||17 March 2021|
|Date first made open access:||14 October 2021|
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