Abstract
Spontaneous vortex nucleation is a universal feature of open and nonlinear physical systems. We investigate theoretically vortex rings and vortex lines emerging during propagation of self-trapped wave beams in nonlocal nonlinear media. We demonstrate how radially perturbed fundamental solitons exhibit extremely robust and long-lived oscillations with the spontaneous generation of a regular set of vortex rings at the wave beam periphery. We find numerically a class of cylindrically symmetric higher-order spatial solitons and investigate their stability and nonlinear dynamics. The formation of external vortex rings, similar to fundamental soliton, is accompanied by emergence of additional internal vortex-antivortex pairs nucleating from the edge-ring phase dislocation of perturbed higher-order soliton.
Original language | English |
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Article number | 043835 |
Journal | Physical Review A |
Volume | 99 |
Issue number | 4 |
DOIs | |
Publication status | Published - Apr 25 2019 |
Funding
A.Y., V.B., and A.O. acknowledge support from Project No. 1/30-2015, “Dynamics and Topological Structures in Bose-Einstein Condensates of Ultracold Gases,” of the KNU Branch Target Training at the NAS of Ukraine. The work of A.D. is supported by Nazarbayev University Grant No. ORAU 20162031, entitled “Structured Light for Nonlinear and Topological Photonics”.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics