Lower Estimates on Eigenvalues of Quantum Graphs
Functional Analysis
2020-12-11 v2 Combinatorics
Spectral Theory
Abstract
A method for estimating the spectral gap along with higher eigenvalues of nonequilateral quantum graphs has been introduced by Amini and Cohen-Steiner recently: it is based on a new transference principle between discrete and continuous models of a graph. We elaborate on it by developing a more general transference principle and by proposing alternative ways of applying it. To illustrate our findings, we present several spectral estimates on planar metric graphs that are oftentimes sharper than those obtained by isoperimetric inequalities and further previously known methods.
Cite
@article{arxiv.1907.13350,
title = {Lower Estimates on Eigenvalues of Quantum Graphs},
author = {Delio Mugnolo and Marvin Plümer},
journal= {arXiv preprint arXiv:1907.13350},
year = {2020}
}
Comments
22 pages, 10 figures