title: Superluminal X-shaped beams propagating without distortion along a coaxial guide.
abstract: In a previous paper we showed that localized superluminal solutions to the Maxwell equations exist, which propagate down (nonevanescence) regions of a metallic cylindrical waveguide. In this paper we construct analogous nondispersive waves propagating along coaxial cables. Such new solutions, in general, consist in trains of (undistorted) superluminal "X-shaped" pulses. Particular attention is paid to the construction of finite total energy solutions. Any results of this kind may find application in the other fields in which an essential role is played by a wave equation (like acoustics, geophysics, etc.).
authors.affiliation: DMO-FEEC, State University at Campinas, SP, Brazil. giz.r@uol.com.br
authors.forename: Michel
authors.initials: M
authors.lastname: Zamboni-Rached
authors.forename: K Z
authors.initials: KZ
authors.lastname: Nóbrega
authors.forename: Erasmo
authors.initials: E
authors.lastname: Recami
authors.forename: Hugo Enrique
authors.initials: HE
authors.lastname: Hernández-Figueroa