Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1993-10-05
Physics
Nuclear Physics
Nuclear Theory
See nucl-th/9310032 for revised version which the authors incompetently resubmitted rather than correctly replacing this
Scientific paper
Within the $\sigma-\omega$ model of coupled nucleon-meson systems, a generalized relativistic Lenard--Balescu--equation is presented resulting from a relativistic random phase approximation (RRPA). This provides a systematic derivation of relativistic transport equations in the frame of nonequilibrium Green's function technique including medium effects as well as flucuation effects. It contains all possible processes due to one meson exchange and special attention is kept to the off--shell character of the particles. As a new feature of many particle effects, processes are possible which can be interpreted as particle creation and annihilation due to in-medium one meson exchange. In-medium cross sections are obtained from the generalized derivation of collision integrals, which possess complete crossing symmetries.
Kremp Dietrich
Morawetz Klaus
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