TRAJECTORY OF THE WAVE-FIELD CENTROID

The behavior of a wave-field centroid with spatial dynamics described by the Schrodinger equation is investigated analytically and numerical ly. The consideration was made for the case of media with inertia of t he nonlinear response. The peculiarities of the dynamics of wave-beam self-action in the media with focusing and defocusing nonlinearities w ere analyzed. Within a paraxial optics approximation, the behavior of the centroid trajectory was studied qualitatively. The numerical calcu lations of the peculiarities of a wave-beam self-action dynamics under the conditions of nonrectilinear motion of the centroid were carried out.