title: Electromagnetic shock wave in nonlinear vacuum: exact solution.
abstract: An analytical approach to the theory of electromagnetic waves in nonlinear vacuum is developed. The evolution of the pulse is governed by a system of nonlinear wave vector equations. An exact solution with its own angular momentum in the form of a shock wave is obtained.
authors.affiliation: Institute of Electronics, Bulgarian Academy of Sciences, Tzarigradcko shossee 72,1784 Sofia, Bulgaria. lubomirkovach@yahoo.com
authors.forename: Lubomir M
authors.initials: LM
authors.lastname: Kovachev
authors.forename: Daniela A
authors.initials: DA
authors.lastname: Georgieva
authors.forename: Kamen L
authors.initials: KL
authors.lastname: Kovachev