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HK: Fachverband Physik der Hadronen und Kerne

HK 8: Kernphysik / Spektroskopie

HK 8.6: Vortrag

Montag, 10. März 2008, 15:15–15:30, 2G

Dorway state phenomena in nuclei simulated through microwave billiards — Sven Åberg¹, Thomas Guhr², •Maksim Miski-Oglu³, and Achim Richter³ — ¹Matematisk Fysik, LTH, Lunds Universitet, Lund, Sweden — ²Fachbereich Physik, Universität Duisburg–Essen, Duisburg, Germany — ³Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany

In a unifying way, the doorway mechanism explains spectral properties in a rich variety of open mesoscopic quantum systems, ranging from atoms to nuclei. A distinct state and a background of other states couple to each other which sensitively affects the strength function. The recently measured superscars in the barrier billiard provide an ideal model for an in–depth investigation of this mechanism. We introduce two new statistical observables for its study, the maximum coupling coefficient to the doorway and directed spatial correlators. Using Random Matrix Theory and random plane waves, we obtain a consistent understanding of the experimental data.