Topological Effects of a Vorticity Filament on the Coherent Backscattering Cone
Disordered Systems and Neural Networks
2019-07-22 v2 Mesoscale and Nanoscale Physics
Fluid Dynamics
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.
Cite
@article{arxiv.1811.00800,
title = {Topological Effects of a Vorticity Filament on the Coherent Backscattering Cone},
author = {Geoffroy J. Aubry and Philippe Roux},
journal= {arXiv preprint arXiv:1811.00800},
year = {2019}
}
Comments
Article + SI, 6 pages, 6 figures