Solitons of a vector model on the honeycomb lattice
  We study a simple nonlinear vector model defined on the honeycomb lattice. We propose a bilinearization scheme for the field equations and demonstrate that the resulting system is closely related to the well-studied integrable models, such as the Hirota bilinear difference equation and the Ablowitz-Ladik system. This result is used to derive the N-soliton solutions. 
V.E. Vekslerchik
nlin.SI math-ph math.MP