title: Optical conductivity of warm dense matter within a wide frequency range using quantum statistical and kinetic approaches.
abstract: Fundamental properties of warm dense matter are described by the dielectric function, which gives access to the frequency-dependent electrical conductivity; absorption, emission, and scattering of radiation; charged particles stopping; and further macroscopic properties. Different approaches to the dielectric function and the related dynamical collision frequency are compared in a wide frequency range. The high-frequency limit describing inverse bremsstrahlung and the low-frequency limit of the dc conductivity are considered. Sum rules and Kramers-Kronig relation are checked for the generalized linear response theory and the standard approach following kinetic theory. The results are discussed in application to aluminum, xenon, and argon plasmas.
authors: Joint Institute for High Temperatures (JIHT) RAS, Izhorskaya 13/19, Moscow 125412, Russia.
authors: M
authors: M
authors: Veysman
authors: Universität Rostock, Institut für Physik, 18051 Rostock, Germany.|National Research Nuclear University (MEPhI), 115409 Moscow, Russia.
authors: G
authors: G
authors: Röpke
authors: Institute for Advanced Simulation, Juelich Supercomputing Centre, Forschungszentrum, Juelich GmbH, 52425 Juelich, Germany.|ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany.
authors: M
authors: M
authors: Winkel
authors: Universität Rostock, Institut für Physik, 18051 Rostock, Germany.|The University of Western Australia, School of Physics, Crawley, Western Australia 6009, Australia.
authors: H
authors: H
authors: Reinholz