2000/07/12 by E. Persson, I. Rotter, H. -J. Stoeckmann +1 · 2 citations
Physics and Astronomy · #cond-mat #nlin.CD #nucl-th
paper · pdf · doi:10.1103/physrevlett.85.2478
published as Phys.Rev.Lett.85:2478,2000 · to be published in Phys. Rev. Lett
arxiv created 2000/07/12 · arxiv updated 2009/11/30
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. In this letter, the first direct experimental verification of this effect, known as resonance trapping, is presented. In the experiment a microwave Sinai cavity with an attached waveguide with variable slit width was used.