Localized structures of electromagnetic waves in hot   electron-positronplasmas
  The dynamics of relativistically strong electromagnetic (EM) wave propagation in hot electron-positron plasma is investigated. The possibility of finding localized stationary structures of EM waves is explored. It is shown that under certain conditions the EM wave forms a stable localized soliton-like structures where plasma is completely expelled from the region of EM field location. 
S. Kartal, N. Tsintsadze, V.I. Berezhiani