Supersymmetric correspondence in spectra on a graph and its line graph: From circuit theory to spoof plasmons on metallic lattices

We investigate the supersymmetry (SUSY) structures for inductor-capacitor circuit networks on a simple regular graph and its line graph. We show that their eigenspectra must coincide (except, possibly, for the highest eigenfrequency) due to SUSY, which is derived from the topological nature of the c...

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Bibliographic Details
Published inarXiv.org
Main Authors Nakata, Yosuke, Urade, Yoshiro, Nakanishi, Toshihiro, Miyamaru, Fumiaki, Mitsuo Wada Takeda, Kitano, Masao
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 02.05.2016
Subjects
Frequency ranges
Lattices
Physics - Optics
Plasmons
Resonant frequencies
Spectrum analysis
Supersymmetry
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Summary:We investigate the supersymmetry (SUSY) structures for inductor-capacitor circuit networks on a simple regular graph and its line graph. We show that their eigenspectra must coincide (except, possibly, for the highest eigenfrequency) due to SUSY, which is derived from the topological nature of the circuits. To observe this spectra correspondence in the high-frequency range, we study spoof plasmons on metallic hexagonal and kagomé lattices. The band correspondence between them is predicted by a simulation. Using terahertz time-domain spectroscopy, we demonstrate the band correspondence of fabricated metallic hexagonal and kagomé lattices.
ISSN:2331-8422
DOI:10.48550/arxiv.1605.00345