Laplace Operator in Networks of Thin Fibers: Spectrum Near the Threshold

Details Laplace Operator in Networks of Thin Fibers: Spectrum Near the Threshold Laplace Operator in Networks of Thin Fibers: Spectrum Near the Threshold

2007-04-20

arxiv.org/abs/0704.2795v1

Physics

Mathematical Physics

Scientific paper

Our talk at Lisbon SAMP conference was based mainly on our recent results (published in Comm. Math. Phys.) on small diameter asymptotics for solutions of the Helmgoltz equation in networks of thin fibers. The present paper contains a detailed review of these results under some assumptions which make them much more transparent. It also contains several new theorems on the structure of the spectrum near the threshold. small diameter asymptotics of the resolvent, and solutions of the evolution equation.

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