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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
    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
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/308034
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