Self-interacting dark matter from an SU(3)_L \otimes U(1)_N electroweak   model
  Recently has been showed that models which consider self-interacting particles as dark matter candidates can be able to account all the discrepancies between N-body simulations and astronomical observations of the galactic structure. In the present work we show that the 3-3-1-electroweak model can provide a realistic candidate to this kind of dark matter. This dark matter particle is not arbitrarily imposed and no new symmetry is need for to stabilize it. 
Douglas Fregolente and Mauro D. Tonasse (ITA, Brazil)