Interaction of Electromagnetic Waves with Quantum and Classical Plasmas

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Abstract
A systematic study of the absorption of electromagnetic waves in a quantum (classical) plasma is given, for waves whose frequencies are high compared to the collision frequency and whose wavelengths are long compared to the Bohr (Debye) radius. The treatment rests on the introduction of the temperature-dependent Green's function and Kubo's formula for the conductivity. An exact expression for the conductivity is obtained for a quantum plasma, which in its classical limit is in complete agreement with Dawson and Oberman, and with Oberman, Ron, and Dawson. The special case is treated of a quantum system of electrons in the presence of fixed ion scatterers.