Stable Optical Vortex Solitons in Pair Plasmas

Details Stable Optical Vortex Solitons in Pair Plasmas Stable Optical Vortex Solitons in Pair Plasmas

2009-09-08

arxiv.org/abs/0909.1394v1

Physics

Plasma Physics

15 pages, 9 figures

Scientific paper

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.

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