Travelling waves for an infinite lattice Multibump type solutions (Q1284663)

The paper deals with a one-dimensional infinite lattice of particles with nearest neighbour interaction. The solutions were found as critical points of certain functionals invariant under a group isomorphic to \(\mathbb{R}\). Therefore all previous approaches which were based on invariance property under a non-compact but discrete group don't seem to work. Moreover, the author proves a multiplicity result in the non-autonomous case.