Novel self-assembled morphologies from isotropic interactions
  We present results from particle simulations with isotropic medium range interactions in two dimensions. At low temperature novel types of aggregated structures appear. We show that these structures can be explained by spontaneous symmetry breaking in analytic solutions to an adaptation of the spherical spin model. We predict the critical particle number where the symmetry breaking occurs and show that the resulting phase diagram agrees well with results from particle simulations. 
Erik Edlund, Oskar Lindgren, Martin Nilsson Jacobi
cond-mat.soft cond-mat.mtrl-sci cond-mat.stat-mech