Solitonic traveling waves in Galileon theory
  This work deals with traveling waves in the two-dimensional Galileon theory. We use the Hirota procedure to calculate one-Galileon, two-Galileon, three-Galileon and breather-like Galileon solutions in the theory under consideration. The results offer strong evidence that the Galileon traveling waves are solitons, and that the Galileon theory is integrable. 
D. Bazeia, L. Losano, J.L.R. Santos
hep-th math-ph math.MP