Stable Optical Vortex Solitons in Pair Plasmas

Abstract

It is shown that the pair plasmas with small temperature asymmetry can support existence of localized as well as de-localized optical vortex solitons. Coexistence of such solitons is possible due to peculiar form of saturating nonlinearity which has a focusing-defocusing nature -- for weak amplitudes being focusing becoming defocusing for higher amplitudes. It is shown that delocalized vortex soliton is stable in entire region of its existence while single- and multi-charged localized vortex solitons are unstable for low amplitudes and become stable for relativistic amplitudes.

15 pages, 9 figures

References in corpus (3)

• Nonlinear Wave Dynamics in Two Temperature Electron-Positron-Ion Plasma
• Wave Localization and Density Bunching in Pair Ion Plasmas
• Asymmetry-Driven Structure Formation in Pair Plasmas

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• Self-Guiding of Electromagnetic Beams in Degenerate Relativistic Electron-Positron Plasma
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• Three-dimensional vortex dipole solitons in self-gravitating systems
• Vortex Bubble Formation in Pair Plasmas
• Modulation instability of lower hybrid waves leading to cusp solitons in electron-positron-ion Thomas Fermi plasma
• Impact of temperature asymmetry and small fraction of static positive ions on the relaxed states of a relativistic hot pair plasma
• Localized Optical Vortex Solitons in Pair Plasmas
• Linear and nonlinear analysis of Ion-Temperature-Gradient (ITG) Driven mode in the asymmetric Pair-Ion Magnetoplasma