Topological effects of a vorticity filament on the coherent backscattering cone
- Aubry, Geoffroy J. Fachbereich Physik, Universität Konstanz, Germany - Department of Physics, University of Fribourg, Switzerland
- Roux, Philippe Université Grenoble Alpes, Université Savoie Mont Blanc, Grenoble, France
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18.07.2019
Published in:
- Physical Review Letters. - 2019, vol. 123, no. 3, p. 035503
English
In this Letter, we report on the effects of a vorticity filament on the coherent backscattering cone. Using ultrasonic waves in a strongly reverberating cavity, we experimentally show that the discrete number of loops of acoustic paths around a pointlike vortex located at the center of the cavity drives the cancellation and the potential rebirth of the coherent backscattering enhancement. The vorticity filament behaves, then, as a topological anomaly for wave propagation that provides some new insight between reciprocity and weak localization.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 327006
- DOI 10.1103/PhysRevLett.123.035503
- Persistent URL
- https://folia.unifr.ch/unifr/documents/308034
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