%0 Journal Article %T Virial expansion of the electrical conductivity of hydrogen plasmas %+ Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE) %A Röpke, G. %A Schörner, M. %A Redmer, R. %A Bethkenhagen, M. %< avec comité de lecture %@ 2470-0045 %J Physical Review E %I American Physical Society (APS) %V 104 %8 2021 %D 2021 %Z 2109.11293 %Z 2021PhRvE.104d5204R %R 10.1103/PhysRevE.104.045204 %K Physics - Plasma Physics %Z Sciences of the Universe [physics]Journal articles %X The low-density limit of the electrical conductivity σ (n ,T ) of hydrogen as the simplest ionic plasma is presented as a function of the temperature T and mass density n in the form of a virial expansion of the resistivity. Quantum statistical methods yield exact values for the lowest virial coefficients which serve as a benchmark for analytical approaches to the electrical conductivity as well as for numerical results obtained from density functional theory-based molecular dynamics simulations (DFT-MD) or path-integral Monte Carlo simulations. While these simulations are well suited to calculate σ (n ,T ) in a wide range of density and temperature, in particular, for the warm dense matter region, they become computationally expensive in the low-density limit, and virial expansions can be utilized to balance this drawback. We present new results of DFT-MD simulations in that regime and discuss the account of electron-electron collisions by comparison with the virial expansion. %G English %L insu-03710144 %U https://insu.hal.science/insu-03710144 %~ UNIV-ST-ETIENNE %~ ENS-LYON %~ INSU %~ CNRS %~ UNIV-LYON1 %~ LGL-TPE %~ UDL %~ UNIV-LYON