Spontaneous crystallization and filamentation of solitons in dipolar condensates

  title={Spontaneous crystallization and filamentation of solitons in dipolar condensates},
  author={Kazimierz Lakomy and Rejish Nath and Luis Santos},
  journal={Physical Review A},
Inter-site interactions play a crucial role in polar gases in optical lattices even in the absence of hopping. We show that due to these long-range interactions a destabilized stack of quasi-one dimensional Bose-Einstein condensates develops a correlated modulational instability in the non-overlapping sites. Interestingly, this density pattern may evolve spontaneously into soliton filaments or a crystal of solitons that can be so created for the first time in ultra-cold gases. These self… 

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