Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
DY: Fachverband Dynamik und Statistische Physik
DY 8: Statistical Physics far from Thermal Equilibrium
DY 8.4: Vortrag
Montag, 20. März 2017, 15:45–16:00, ZEU 118
Nonequilibrium thermodynamics by nonlocal quantum kinetic theory — •Klaus Morawetz1,2,3 and Pavel Lipavsky4 — 1Münster University of Applied Sciences, Stegerwaldstrasse 39, 48565 Steinfurt, Germany — 2International Institute of Physics (IIP) Av. Odilon Gomes de Lima 1722, 59078-400 Natal, Brazil — 3Max-Planck-Institute for the Physics of Complex Systems, 01187 Dresden, Germany — 4Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 12116 Prague 2, Czech Republic
The balances for thermodynamic quantities are derived from the nonlocal kinetic quantum kinetic equation. It turns out that the nonlocal collision scenario leads to molecular contributions to the observables and currents. The corresponding observable is multiplied with the rate to form a molecule and the delay time which can be considered as collision duration. Explicit expressions of these molecular contributions are given in terms of the scattering phase shifts. The two-particle form of the entropy is derived. This extends the Landau quasiparticle picture by two-particle molecular contributions. While for energy and momentum there is a continuous exchange of correlation into kinetic parts condensing into the rate of correlated variables. For the entropy an explicit gain remains and Boltzmann’s H-theorem is proved including the molecular parts of entropy. The consistency of the theory is shown by obtaining the same expressions from the functional between Wigner and quasiparticle distribution within the extended quasiparticle picture.