Water-Wave Vortices and Skyrmions
arXiv:2308.03520 · doi:10.1103/PhysRevLett.132.054003
Abstract
Topological wave structures -- phase vortices, skyrmions, merons, etc. -- are attracting enormous attention in a variety of quantum and classical wave fields. Surprisingly, these structures have never been properly explored in the most obvious example of classical waves: water-surface (gravity-capillary) waves. Here we fill this gap and describe: (i) water-wave vortices of different orders carrying quantized angular momentum with orbital and spin contributions, (ii) skyrmion lattices formed by the instantaneous displacements of the water-surface particles in wave interference, (iii) meron (half-skyrmion) lattices formed by the spin density vectors, as well as (iv) spatiotemporal water-wave vortices and skyrmions. We show that all these topological entities can be readily generated in linear water-wave interference experiments. Our findings can find applications in microfluidics and show that water waves can be employed as an attainable playground for emulating universal topological wave phenomena.
7 pages, 3 figures, to appear in Phys. Rev. Lett
References in corpus (9)
- Observation of the spin-based plasmonic effect in nanoscale structures
- Angular Momenta and Spin-Orbit Interaction of Nonparaxial Light in Free Space
- Spatio-temporal vortex beams and angular momentum
- Roadmap on spatiotemporal light fields
- Spin and orbital angular momenta of acoustic beams
- Creation of orbital angular momentum states with chiral polaritonic lenses
- Observation of polarization singularities and topological textures in sound waves
- Elastic Spin and Orbital Angular Momenta
- Forced three-wave interactions of capillary-gravity surface waves
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- Photonic Shankar skyrmion
- Conversion of twistedness from light to atoms
- Analytic Approach for Computation of Topological Number of Integrable Vortex on Torus
- Time-diffracting 2D wave vortices
- Non-diffracting meronic spin defects of light