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Phys Rev Lett. 2006 Feb 3;96(4):043901. Epub 2006 Feb 1.

Observation of attraction between dark solitons.

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  • 1Nonlinear Physics Centre, Research School of Physical Sciences and Engineering, Canberra ACT 0200, Australia.


We demonstrate a dramatic change in the interaction forces between dark solitons in nonlocal nonlinear media. We present what we believe is the first experimental evidence of attraction of dark solitons. Our results indicate that attraction should be observable in other nonlocal systems, such as Bose-Einstein condensates with repulsive long-range interparticle interaction.

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