Dresden 2009 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
DY: Fachverband Dynamik und Statistische Physik
DY 26: Poster II
DY 26.26: Poster
Donnerstag, 26. März 2009, 16:00–18:00, P1A
Partially broken time-reversal invariance investigated on chaotic scattering systems — Barbara Dietz1, Thomas Friedrich2, Hanns L. Harney3, Maksim Miski-Oglu1, Achim Richter1, •Florian Schäfer1, and Hans A. Weidenmüller3 — 1Institut für Kernphysik, Schlossgartenstraße 9, 64289 Darmstadt — 2GSI Helmholzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt — 3Max-Planck-Institut für Kernphysik, 69029 Heidelberg
We investigate effects of time-reversal symmetry breaking induced by a magnetized ferrite inside a flat microwave billiard. Our focus is the fluctuations of the scattering matrix in the regime of weakly overlapping resonances. We compare the data to a model based on random matrix theory. The model describes the fluctuations in the regime of partial time-reversal symmetry breaking with high precision. By help of the model, the time-reversal symmetry breaking strength is determined based on two independent methods, auto- and cross-correlation functions. In addition, elastic enhancement factors are studied. They drop below 2 at strong violation of time-reversal invariance. Thus, we present several independent tools to probe the violation of time-reversal symmetry in general chaotic scattering systems.