Experimental versus numerical eigenvalues of a Bunimovich stadium billiard: A comparison

H. Alt, C. Dembowski, H.-D. Gräf, R. Hofferbert, H. Rehfeld, A. Richter, and C. Schmit
Phys. Rev. E 60, 2851 – Published 1 September 1999
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Abstract

We compare the statistical properties of eigenvalue sequences for a γ=1 Bunimovich stadium billiard. The eigenvalues have been obtained in two ways: one set results from a measurement of the eigenfrequencies of a superconducting microwave resonator (real system), and the other set is calculated numerically (ideal system). We show influence of mechanical imperfections of the real system in the analysis of the spectral fluctuations and in the length spectra compared to the exact data of the ideal system. We also discuss the influence of a family of marginally stable orbits, the bouncing ball orbits, in two microwave stadium billiards with different geometrical dimensions.

  • Received 21 April 1999

DOI:https://doi.org/10.1103/PhysRevE.60.2851

©1999 American Physical Society

Authors & Affiliations

H. Alt1,*, C. Dembowski1, H.-D. Gräf1, R. Hofferbert1, H. Rehfeld1, A. Richter1,2, and C. Schmit3

  • 1Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
  • 2Wissenschaftskolleg zu Berlin, D-14193 Berlin, Germany
  • 3Institute de Physique Nucléaire, F-91406 Orsay, France

  • *Present address: Klöckner Pentaplast, D-56412 Heiligenroth, Germany.

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Vol. 60, Iss. 3 — September 1999

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