... problem of un-derstanding the motions of particles in a plasma (and the related flows of energy, momentum, and other physical quantities) is extremely im-portant in many, if not all, areas of plasma ... short period of time a vac-uum can have some nonzero energy in a form of creation and annihilation some particle and its antiparticle, or in the appearance and dis-appearance of some physical ... |Vint|i|2×ρ(Ef−Ei=¯hω0). Here, i and f denote initial and finalstates, Vint and ω0denote the amplitude and fre-quency of the excitation, and Ei,fis the energy of the initial and final states.translation...