Faster-than-light propagation of electromagnetic solitons in nonequilibrium medium taking account of diffraction

In this work the faster-than-light propagation taking account of diffraction of ultimately short electromagnetic video solitons and envelope solitons in a bicomponent nonequilibrium medium undergoing two-level quantum transitions with widely differing eigenfrequencies is examined. The conditions of stable propagation with respect to self-focusing are determined.

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