ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)


localization

Self-trapping and breathers in disordered nonlinear oscillatory lattices

We present a comparative study of two classes of solutions to Frohlich–Spencer– Wayne chain model with random spatial inhomogeneity (disorder): self-trapped wave packets on one hand, and discrete breathers (localized in space, time-periodic solutions) on the other. Wave packets are obtained by numerical integration of dynamical equations with single-site initial conditions. When given sufficient energy, the packet remains localized in space throughout the observation time.