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P: Fachverband Plasmaphysik

P 16: Poster Session Plasma Physics

P 16.117: Poster

Donnerstag, 19. März 2026, 13:45–15:45, Redoutensaal

Quantum kinetic methods for dense quantum plasmas in nonequilibrium — •Christopher Makait and Michael Bonitz — Institute of Theoretical Physics and Astrophysics, Christian-Albrechts-Universität zu Kiel, 24098 Kiel, Germany

Standard kinetic approaches to plasma dynamics, such as the Boltzmann equation and the Lenard-Balescu equation (LB), face severe limitations when interaction energies, quantum effects, and ultra-short time scales - e.g. induced by intense laser pulses - become relevant [1]. These limitations can be overcome by non-Markovian quantum kinetic approaches such as nonequilibrium Green functions [2], reduced density matrices [3], or quantum fluctuations [4], each with their own advantages and disadvantages, in terms of accuracy and computational effort. Here, we systematically compare Markovian (LB) and non-Markovian results for electrical conductivity and stopping power in dense plasmas, and quantify the impact of non-Markovian memory effects.

[1] H. Haberland et al, Phys. Rev. E 64, 026405 (2001)

[2] G. Stefanucci, R. van Leeuwen, “Nonequilibrium Many-Body Theory of Quantum Systems: A Modern Introduction”

[3] M. Bonitz, “Quantum Kinetic Theory”, 2nd ed. Springer 2016

[4] E. Schroedter et al, Condensed Matter Physics, 2022, vol. 25, No. 2, 23401

Keywords: quantum plasma; warm dense matter; quantum kinetic theory; nonequilibrium