Regensburg 2002 – wissenschaftliches Programm
DY 42.1: Vortrag
Donnerstag, 14. März 2002, 11:15–11:30, H2
Space-time versus particle-hole symmetry in quantum Enskog equations — •Klaus Morawetz1, Václav Špička2, and Pavel Lipavský2 — 1Max-Planck-Institute for the Physics of Complex Systems, Noethnitzer Str. 38, 01187 Dresden, Germany — 2Institute of Physics, Academy of Sciences, Cukrovarnická 10, 16200 Praha 6, Czech Republic
The non-local scattering-in and -out integrals of the Enskog equation have reversed displacements of colliding particles reflecting that the -in and -out processes are conjugated by the space and time inversions. Generalisations of the Enskog equation to Fermi liquid systems are hindered by a request of the particle-hole symmetry which contradicts the reversed displacements. We resolve this problem with the help of the optical theorem. It is found that space-time and particle-hole symmetry can only be fulfilled simultaneously for the Bruckner-type of internal Pauli-blocking while the Feynman-Galitskii form allows only for particle-hole symmetry but not for space-time symmetry due to stimulated emission of Bosons.