2014/01/04 by H. Reinholz, G. Röpke, Reinholz, H. +5
Earth and Planetary Sciences · Physics and Astronomy · #FOS: Physical sciences #High-pressure geophysics and materials #Plasma Physics (physics.plasm-ph) #Spectroscopy and Quantum Chemical Studies #Theoretical and Computational Physics
paper · pdf · doi:10.48550/arxiv.1401.0805
openalex publication_date 2014/01/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The controversy with respect to the role of electron-electron collisions in the dynamic conductivity of dense plasmas is resolved. In particular, the dc conductivity is analyzed in the low-density, non-degenerate limit where the Spitzer theory is valid and electron-electron collisions lead to the well-known reduction of the result for a Lorentz plasma. With increasing degeneracy, the contribution of electron-electron collisions to the dc conductivity is decreasing and can be neglected for the liquid metal domain where the Ziman-Faber theory is applicable. We show how electron-electron collisions have to be implemented in calculations based on the Kubo-Greenwood formula which is prevalently applied in simulations for the frequency-dependent conductivity in the warm dense matter region, i.e. for arbitrary degeneracy.