Relativistic solitons in magnetized plasmas

The results of analytical and numerical investigations on the properties of one-dimensional (nondrifting) solitons of relativistic amplitude, in the presence of an externally imposed uniform magnetic field B-0, are presented and compared with those of the unmagnetized plasma theory (Esirkepov et al., Pis'ma Zh. Eksp. Teor. Fiz. 68, 33 (1998) [JETP Lett. 68, 36 (1998)]). The presence of a uniform longitudinal magnetic field, the intensity of which corresponds to an electron cyclotron frequency Omega(e) = eB(0)/m(e)c that is a non-negligible fraction of the laser frequency Omega(0), has important consequences on the properties of relativistically intense solitons. The region of the parameter space (omega(0),Omega(e)) where magnetized solitons exist is determined analytically, and new conditions of breaking due to the total density depletion are given. It is shown that stable high energy magnetized solitons can be produced.