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18 April 2024

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The Snake Instability of Ring Dark Solitons in Toroidally Trapped Bose-Einstein Condensates
Lauri Toikka ; Kalle-Antti Suominen ;
Date:	15 Oct 2012
Abstract:	We show that the onset of the snake instability of ring dark solitons requires a broken symmetry. We also elucidate explicitly the connection between imaginary Bogoliubov modes and the snake instability, predicting the number of vortex-anti-vortex pairs produced. In addition, we propose a simple model to give a physical motivation as to why the snake instability takes place. Finally, we show that tight confinement in a toroidal potential actually enhances soliton decay due to inhibition of soliton motion.
Source:	arXiv, 1210.3994
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