Dynamics of vortex-antivortex pairs and rarefaction pulses in liquid light
arXiv:1703.03491 · doi:10.1103/PhysRevE.95.032208
Abstract
We present a numerical study of the cubic-quintic nonlinear Schrödinger equation in two transverse dimensions, relevant for the propagation of light in certain exotic media. A well known feature of the model is the existence of flat-top bright solitons of fixed intensity, whose dynamics resembles the physics of a liquid. They support traveling wave solutions, consisting of rarefaction pulses and vortex-antivortex pairs. In this work, we demonstrate how the vortex-antivortex pairs can be generated in bright soliton collisions displaying destructive interference followed by a snake instability. We then discuss the collisional dynamics of the dark excitations for different initial conditions. We describe a number of distinct phenomena including vortex exchange modes, quasielastic flyby scattering, soliton-like crossing, fully inelastic collisions and rarefaction pulse merging.
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Cited by in corpus (4)
- Traveling Bubbles and Vortex Pairs within Symmetric 2D Quantum Droplets
- Double-flat-top half-vortices and self-bound solitary wave billiards in cubic-quintic media with intermodal attraction
- Rogue waves in extended Gross-Pitaevskii Models with a Lee-Huang-Yang correction
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