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arXiv · 1811.00800

Topological Effects of a Vorticity Filament on the Coherent Backscattering Cone

Geoffroy J. Aubry·Philippe Roux
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Abstract

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.

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BibTeXRIS

Geoffroy J. Aubry, Philippe Roux. 2018-11-02. Topological Effects of a Vorticity Filament on the Coherent Backscattering Cone. https://doi.org/10.1103/physrevlett.123.035503

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