title: Hole-vortex solitons.
abstract: Three-dimensional two-component solitons, propagating in long-short wave resonance mode, are predicted. If the spectrum of the short-wave component lies in the area of normal group velocity dispersion, these solitons have transverse structure in the form of hole-vortex field defects on an infinite background. In the opposite case two-component "bullets" or the "bright" vortex and the "bullet" with a hole in the center can exist. The stability region of the considered objects is estimated on the basis of a variational approach. As a concrete physical model we consider the propagation of electromagnetic pulses in a uniaxial crystal. Here the ordinary component of the pulse is the short wave, and its extraordinary component is the long wave.
authors.affiliation: Department of Theoretical Physics, I. Kant State University of Russia, 236041 Kaliningrad, Russia. bugay@newmail.ru
authors.forename: Aleksandr N
authors.initials: AN
authors.lastname: Bugay
authors.forename: Sergey V
authors.initials: SV
authors.lastname: Sazonov