arXiv:0902.1418 · Physical Review Letters

Induced Violation of Time-Reversal Invariance in the Regime of Weakly Overlapping Resonances

Barbara Dietz, Thomas Friedrich, Hanns Ludwig Harney, M. Miski-Oglu, A. Richter, F. Schäfer, J. J. M. Verbaarschot, Hans A. Weidenmüller

Published Aug 3, 2009• 58 citations

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Abstract

We measure the complex scattering amplitudes of a flat microwave cavity (a "chaotic billiard"). Time-reversal (T) invariance is partially broken by a magnetized ferrite placed within the cavity. We extend the random-matrix approach to T violation in scattering, determine the parameters from some properties of the scattering amplitudes, and successfully predict others. Our work constitutes the most precise test of the random-matrix theoretical approach to T violation so far available.

DOI: 10.1103/physrevlett.103.064101

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