SOLITONS OF NONLINEAR SCALAR ELECTRODYNAMICS IN GENERAL-RELATIVITY

Solitons with spherical and/or cylindrical symmetry in the interacting system of scalar, electromagnetic, and gravitational fields have been obtained. As a particular case it is shown that the equations of moti on admit a special kind of solution with a sharp boundary, known as dr oplets. For these solutions, the physical fields vanish and the space- time is flat outside of the critical sphere or cylinder. Therefore, th e mass and the electric charge of these configurations are zero.