Berlin 2008 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 23: Quantum chaos I
DY 23.3: Vortrag
Donnerstag, 28. Februar 2008, 10:15–10:30, MA 001
Resonance widths in open microwave cavities studied by harmonic inversion — •Ulrich Kuhl1, Ruven Höhmann1, Jörg Main2, and Hans-Jürgen Stöckmann1 — 1Fachbereich Physik, Philipps-Universität Marburg, Renthof 5, — 2Institut für Theoretische Physik und Synergetik, Universität Stuttgart,
From the measurement of a reflection spectrum of an open microwave cavity the poles of the scattering matrix in the complex plane have been determined [1]. The resonances have been extracted by means of the harmonic inversion method [2]. By this it became possible to resolve the resonances in a regime where the line widths exceed the mean level spacing up to a factor of 10, a value inaccessible in experiments up to now. The obtained experimental distributions of line widths were found to be in good agreement with predictions from random matrix theory [3].
[1] arXiv:0711.1828v1
[2] J. Main, Phys. Rep. 316, 233 (1999).
[3] H. J. Sommers, Y. V. Fyodorov, and M. Titov, J. Phys. A 32, L77 (1999).