title: Ultrashort solitons and kinetic effects in nonlinear metamaterials.
abstract: We present a stability analysis of a modified nonlinear Schrödinger equation describing the propagation of ultrashort pulses in negative refractive index media. Moreover, using methods of quantum statistics, we derive a kinetic equation for the pulses, making it possible to analyze and describe partial coherence in metamaterials. It is shown that a unique short pulse soliton, which is found analytically, can propagate in the medium.
authors.affiliation: Department of Physics, Umeå University, SE-901 87 Umeå, Sweden.
authors.forename: Mattias
authors.initials: M
authors.lastname: Marklund
authors.forename: Padma K
authors.initials: PK
authors.lastname: Shukla
authors.forename: Lennart
authors.initials: L
authors.lastname: Stenflo