BOUND-STATES OF LATTICE SOLITONS AND THEIR BIFURCATIONS

Families of travelling wave solutions have been studied in a one-dimen sional kink-bearing model with a nonlinear intersite coupling. The val ue of the soliton velocity depends on the parameters of the system suc h as an anharmonicity parameter and the barrier height of the on-site potential, to which the chain is subjected. These dependencies have be en studied numerically using a pseudo-spectral method. The solution sp ace of the bound state lattice solitons has an interesting bifurcation structure.