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

Köber, Bernd, Kuhl, Ulrich, Stöckmann, Hans-Juergen, Goussev, Arseni and Richter, Klaus (2011) Fidelity decay for local perturbations: microwave evidence for oscillating decay exponents. Physical Review E (PRE), 83 (1). 016214-01620. ISSN 1539-3755

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Official URL: http://dx.doi.org/10.1103/PhysRevE.83.016214

Abstract

We study fidelity decay in classically chaotic microwave billiards for a local, piston-like boundary perturbation. We experimentally verify a predicted non-monotonic cross-over 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
Subjects: F300 Physics
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Arseni Goussev
Date Deposited: 22 Oct 2012 11:30
Last Modified: 13 May 2017 17:19
URI: http://nrl.northumbria.ac.uk/id/eprint/9853

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