title: Dark solitons in electron-positron plasmas.
abstract: We demonstrate that a dark soliton is a stable nonlinear coherent mode in electron-positron plasmas. The dark soliton comprises the minimum of the electromagnetic energy density and the minimum of the plasma density. Contrary to a bright soliton, the dark soliton can advect the trapped charged particles. The energy of trapped particles is well above the kinetic energy of the particles in the background plasma.
authors.affiliation: Istituto di Fisica del Plasma, Consiglio Nazionale delle Ricerche, Milano, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Farina
authors.forename: S V
authors.initials: SV
authors.lastname: Bulanov