SKM 2023 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 21: Quantum Chaos and Coherent Dynamics

DY 21.2: Talk

Tuesday, March 28, 2023, 14:15–14:30, MOL 213

New type of scarring in quantum chaotic scattering — •Jan Robert Schmidt and Roland Ketzmerick — TU Dresden, Institut für Theoretische Physik, Dresden, Germany

We study the three-disk scattering system, which is a paradigmatic example for quantum chaotic scattering. It is shown that any resonance state can be described by a product of a multifractal pattern of classical origin and universal, exponentially distributed fluctuations, as found for optical microcavities [1]. The first factor is determined by averaging resonance states with similar lifetime and is compared to an approximate conditionally-invariant measure from open chaotic maps [2]. A new type of scarring along ray segments, unrelated to periodic-orbit scarring, was recently observed in (partially open) optical microcavities [1]. Ray-segment scarring is just as well observed in the (fully open) three-disk system and has been overlooked for 30 years.

• [1] R. Ketzmerick, K. Clauß, F. Fritzsch, and A. Bäcker, Phys. Rev. Lett. 129, 193901 (2022).
• [2] K. Clauß, M. J. Körber, A. Bäcker, and R. Ketzmerick, Phys. Rev. Lett. 121, 074101 (2018).