Fidelity decay for local perturbations: Microwave evidence for oscillating decay exponents

Koeber, Bernd and Kuhl, Ulrich and Stoeckmann, Hans-Juergen and Goussev, Arseni and Richter, Klaus (2011) Fidelity decay for local perturbations: Microwave evidence for oscillating decay exponents. PHYSICAL REVIEW E, 83 (1): 016214. ISSN 1539-3755,

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Abstract

We study fidelity decay in classically chaotic microwave billiards for a local, pistonlike boundary perturbation. We experimentally verify a predicted nonmonotonic crossover from the Fermi golden rule to the escape-rate regime of the Loschmidt echo decay with increasing local boundary perturbation. In particular, we observe pronounced oscillations of the decay rate as a function of the piston position which quantitatively agree with corresponding theoretical results based on a refined semiclassical approach for local boundary perturbations.

Item Type: Article
Uncontrolled Keywords: SYSTEMS; DECOHERENCE; ECHOES;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter
Depositing User: Dr. Gernot Deinzer
Date Deposited: 29 Jun 2020 05:17
Last Modified: 29 Jun 2020 05:17
URI: https://pred.uni-regensburg.de/id/eprint/21379

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