Real-Time Kadanoff-Baym Approach to Plasma Oscillations in a Correlated Electron Gas

1999/12/03 by N. H. Kwong, N. -H. Kwong, M. Bonitz +1 · 7 citations
Engineering · Physics and Astronomy · #Dust and Plasma Wave Phenomena #Electron #Fermi gas #Nuclear physics #Physics #Plasma #Plasma Diagnostics and Applications #Plasma oscillation #Quantum, superfluid, helium dynamics #cond-mat.stat-mech #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.84.1768

published as Phys.Rev.Lett.84:1768-1771,2000 · 4 pages two-column RevTeX, 6 figures including 4 diagrams included in text, submitted to Phys. Rev. Lett

arxiv created 1999/12/03 · openalex publication_date 2000/02/21 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

A nonequilibrium Green's functions approach to the collective response of correlated Coulomb systems at finite temperatures is presented. It is shown that solving Kadanoff-Baym-type equations of motion for the two-time correlation functions including the external perturbing field allows one to compute the plasmon spectrum with collision effects in a systematic and consistent way. The scheme has a "built-in" sum-rule preservation and is simpler to implement numerically than the equivalent equilibrium approach based on the Bethe-Salpeter equation.

Citations

• Collective Modes in Strongly Coupled Electronic Bilayer Liquids

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