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Soliton generation in molecular chains.

The mechanism of soliton generation in a chain, with the electron-phonon interaction taken into account, is reduced to the problem of calculating the time evolution of an initial excitation in the form of an exponential damping in space and obeying the nonlinear Schrodinger equation. The dependence of the soliton amplitude, width, and velocity on initial conditions is obtained with the inverse scattering method. The generation of solitons is shown to be critically dependent on the system nonlinearity