Resonance Chains and Geometric Limits on Schottky Surfaces

Springer Science and Business Media LLC - Tập 337 - Trang 727-765 - 2015
Tobias Weich1,2
1Fachbereich Mathematik, Philipps-Universität Marburg, Marburg, Germany
2Institut für Mathematik, Universität Paderborn, Paderborn, Germany

Tóm tắt

Resonance chains have been observed in many different physical and mathematical scattering problems. Recently, numerical studies linked the phenomenon of resonances chains to an approximate clustering of the length spectrum on integer multiples of a base length. A canonical example of such a scattering system is provided by 3-funneled hyperbolic surfaces where the lengths of the three geodesics around the funnels have rational ratios. In this article we present a mathematically rigorous study of the resonance chains for these systems. We prove the analyticity of the generalized zeta function, which provides the central mathematical tool for understanding the resonance chains. Furthermore, we prove for a fixed ratio between the funnel lengths and in the limit of large lengths that after a suitable rescaling, the resonances in a bounded domain align equidistantly along certain lines. The position of these lines is given by the zeros of an explicit polynomial that only depends on the ratio of the funnel lengths.

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