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TT: Tiefe Temperaturen

TT 16: Postersitzung II: Amorphe und Tunnelsysteme, Mesoskopische Systeme, Schwere Fermionen, Kernmagnetismus

TT 16.16: Poster

Dienstag, 27. März 2001, 14:30–17:00, Rang S\ 3

Observation of resonance trapping in an open microwave cavity — •Emil Persson^1,2, Ingrid Rotter³, Hans-Jürgen Stöckmann¹, Michael Barth¹, and Young-Hee Kim¹ — ¹Fachbereich Physik, Philipps-Universität Marburg, Renthof 5, D-35032 Marburg — ²Institut für Theoretische Physik, Technische Universität Wien, A-1040 Wien — ³Max-Planck-Institut für Physik komplexer Systeme, D- 01187 Dresden

The coupling of a quantum mechanical system to open decay channels has been theoretically studied in numerous works, mainly in the context of nuclear physics but also in atomic, molecular, and mesoscopic physics. Theory predicts that with increasing coupling strength to the channels the resonance widths of all states should first increase but finally decrease again for most of the states. We present the first direct experimental verification of this effect, known as resonance trapping. In the experiment a microwave Sinai cavity with an attached waveguide with variable slit width was used.

[1] Phys. Rev. Lett. 85, 2478 (2000)