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DPG

Berlin 2001 – wissenschaftliches Programm

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P: Plasmaphysik

P 10: Theory and Plasma Diagnostic (Poster Session)

P 10.8: Poster

Mittwoch, 4. April 2001, 12:30–15:00, AT2

Retarded versus time-nonlocal quantum kinetic equations — •K. Morawetz1,2, Pavel Lipavský3, and Václav Špička31Max-Planck-Institute for the Physics of Complex Systems, Noethnitzer Str. 38, 01187 Dresden, Germany — 2LPC-ISMRA, Bld Marechal Juin, 14050 Caen, France — 3Institute of Physics, Academy of Sciences, Cukrovarnická 10, 16200 Praha 6, Czech Republic

The finite duration of the collisions in Fermionic systems as expressed by the retardation time in the non-Markovian Levinson equation is discussed in the quasiclassical limit. We separate individual contributions included in the memory effect resulting in (i) off-shell tails of the Wigner distribution, (ii) renormalization of scattering rates and (iii) of the single-particle energy, (iv) collision delay and (v) related non-local corrections to the scattering integral. In this way we transform the Levinson equation into the Landau-Silin equation extended by the non-local corrections known from the theory of dense gases. The derived kinetic equation unifies the Landau theory of quasiparticle transport with the classical kinetic theory of dense gases. The space-time symmetry is discussed versus particle-hole symmetry and a solution is proposed which transforms these two exclusive pictures into each other.
Ann. of Phys., cond-mat/0005287: Retarded versus time-nonlocal quantum kinetic equations, K. Morawetz, P. Lipavský, V. Spička Phys. Rev. E 59 R1291-R1294 rap. comm.: Noninstananeous collisions and two concepts of quasiparticles, P. Lipavský, V. Spička, K. Morawetz Phys. Rev. Lett. 82 3767-3770: Virial corrections to simulations of heavy ion reactions, K. Morawetz, V. Spička, P. Lipavský, G. Kortemeyer, Ch. Kuhrts, R. Nebauer Annales de physique, in prep.: Kinetic theory for strongly interacting Fermi systems, P. Lipavský, K. Morawetz, V. Spička, ca. 350 pages

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